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Peer counselling as an approach to improve complementary feeding practices: a narrative review



Appropriate complementary feeding can help reduce the risk of malnutrition and is especially important in Asian and African countries. Peer counselling has been used as an approach to improve complementary feeding practices and is often combined with other interventions, like food fortification or supplements, or as a part of broader nutrition education program. The aim of this narrative review is to assess the effectiveness of peer counselling on improving complementary feeding practices in Asian and African countries.


We searched through seven electronic databases: CINAHL, MEDLINE (OVID), PubMed, Embase, Web of Science, the Cochrane Library and WHO Global Health library from 2000 to April 2021, and had the following inclusion criteria. Studies were included if they were community- or hospital-based, had infants aged 5–24 months old, had individual or group peer counselling, and the effects of peer counselling on complementary feeding practices were measured. Methodological quality was assessed using the Joanna Briggs Institute’s critical appraisal checklist for evidence studies.


Out of 6 studies that met the above criteria, 3 studies were randomised controlled trials and 3 were quasi-experimental studies. In Bangladesh, India, Nepal and Somalia, peer counselling was found to be effective in improving timely initiation of complementary feeding, minimum meal frequency and minimum dietary diversity in all of our selected studies. In addition, improvement in breastfeeding practices, complementary foods preparation, hygiene, psychological stimulation for cognitive development of children and mothers’ understanding of hunger cues were observed in some of our selected studies.


This review evaluates the effectiveness of peer counselling to improve complementary feeding practices in Asian and African countries. Peer counselling improves timely complementary feeding and ensures the correct proportions and consistency of foods including adequate amounts of food is given. Other important complementary feeding indicators like minimum dietary diversity, minimum meal frequency and minimum acceptable diet can also be increased through peer-counselling interventions. Peer counselling is well known to enhance the rate of breastfeeding practices, but this review suggests it is also effective for complementary feeding and may inform future nutrition programs to extend the length of peer counselling for mothers.


Malnutrition has become a pressing global concern and is one of the leading causes of morbidity and mortality in children [1]. Malnutrition alone is responsible for almost 45% of child mortality globally [2]. Sub-Saharan Africa and South Asia have the highest child mortality rates in the world, and 80% of child mortality refer to the sub-Saharan and South Asia regions due to birth complications and undernutrition [2, 3]. Inadequate complementary feeding practices are a major cause for the onset of malnutrition [4]. Appropriate complementary feeding can help reduce malnutrition and other associated diseases [5, 6].

Complementary feeding is defined as ‘the consumption of foods and liquids when breast milk is no longer sufficient to meet the nutritional requirements of infants’ [7, 8]. The World Health Organization (WHO) recommends the age of 6 months as appropriate for ‘timely initiation of complementary feeding’ practices for infants. This means an infant should be fed solid, semisolid or soft complementary foods in addition to breastmilk for up to 2 years [5, 8]. Focusing on improving feeding practices of children under 2 years is critical because they experience rapid growth and development and a higher vulnerability to illness during this time [4]. Poor complementary feeding practices leads to many illness such as diarrheal diseases, measles, malaria and respiratory infections [9].

Many studies have been conducted to improve complementary feeding in infants. Preventive interventions, such as nutrition education, using fortified food powder or other supplementation, food vouchers or ready to use therapeutic foods, have been trialled [10, 11].

Positive impacts of feeding counselling on improving energy and nutrient intake of children under 2, as well as improving their growth, are ever-increasing. Counselling to improve breastfeeding practices among mothers has proven to be quite successful in the past [12]. Nutrition counselling, without any other supplementation, has been shown to improve nutritional status of a child (from mild underweight to normal weight) by 37% after just 3 months of intervention [13].

The term ‘counselling’ is often used in infant and young child feeding (IYCF) studies. Counselling is a type of support or help provided to mothers, fathers or sometimes other family or household members [14]. Positive effects of counselling on people’s behaviours and knowledge is widely acknowledged and accepted [15]. Counselling can be provided through various mediums such as health professionals, community workers, women’s groups, midwives, nutrition professionals, mothers and fathers groups or peer counsellors [16].

Peer counselling is a support process that involves a one-on-one interaction or interaction between members of a group, where the peer counsellors provide advice and teach skills to each other within group members. Various studies have shown that peer support can help improve many aspects of health [17, 18]. Although the effects of peer counselling on breastfeeding have been well known, the effectiveness of peer counselling or peer support as an intervention for influencing complementary feeding in infants is less known, and very few studies have been designed to study this aspect [12, 19,20,21].

This paper is narrowly focused on a particular topic with a few selected peer-reviewed papers that provided an overall interpretation of peer counselling in a critical and comprehensive way as a form of narrative review. The aim of this narrative review is to analyse the evidence on published peer-supported studies that specifically includes peer-counselling and peer supported interventions and seeks to improve complementary feeding practices in Asian and African countries.

Methods of literature searching

Search strategy

We searched 7 electronic databases: CINAHL, MEDLINE (Ovid), PubMed, Embase, Web of Science, the Cochrane Library and WHO Global Health library, using the keywords ‘peer counselling’ AND ‘complementary feeding’ AND ‘intervention’ [the search strategy for MEDLINE (OVID) is presented as an example in Appendix Table 4. The same strategy was used for other databases for studies published in English and with publication data from 2000 to April 2021. Titles and abstracts were initially screened by review author (NBH) and a research librarian (JC). Potential full texts to be included were screened separately between the 3 authors (NBH, SM, RH) who confirmed each study against the agreed exclusion and inclusion criteria. Disagreement was resolved by discussion amongst the authors (NBH, SM, RH).

Study selection and eligibility criteria

A study was eligible for inclusion if it:

  • Was a randomised or non-randomised controlled trial (a randomised trial study had a control group and a non-randomised study may have a control group or may measure the effects based on pre- and post-intervention results).

  • Consisted of mother–infant pair participants.

  • Had infants who were aged from 5–24 months old during the intervention phase (5 months to see the outcomes of early initiation)

  • Included some components of individual or group peer support or peer counselling (as defined below) as the intervention

  • Related the study outcomes to complementary feeding practices (can be either primary or secondary outcome).

To be included as a peer-counselling study, studies could be:

  • Community-based or hospital-based

  • Individual or group counselling, with peer counsellors from the same geographic region or residing in the same community

  • Peer counsellors from the same level of education as the target group

males or females who are solely focused on peer counselling and no other occupation (e.g., community nurse, community health workers, nutritionists).

Interventions that have counselling provided by health professionals, healthcare providers, midwives, nutrition counsellor or others, without involvement of any peer support (as defined above), were excluded from the study. Studies with other types of interventions, such as food supplementation, food fortification, ready to use therapeutic food, nutrition education or behaviour-change models, were also excluded in the same way if they had no form of peer support as part of the intervention. We excluded pilot studies, descriptive or observational studies or grey literatures as well.

Data extraction

Two of the review authors (NBH and SM) independently extracted data in a specific tabulated form, which included country of study, study type, study design, study year, targeted population, objectives, sampling technique, eligibility criteria, intervention methods, outcomes, data collection methods and analysis procedures. Outcomes were measured as per the complementary feeding measurement indicators set by World Health Organization (WHO) [22, 23] (Appendix Table 5). This included timing of initiation of complementary feeding, minimum meal frequency (MMF), minimum dietary diversity (MDD) and minimum acceptable diet (MAD). Other relevant measures, such as use of separate cooking pots, using extra oil in baby’s food, and hygiene during food preparation, were also included.

Quality of evidence assessment

Two of the review authors (NBH and SM) independently assessed the methodological quality of selected studies using critical appraisal checklist [24] by the Joanna Briggs Institute (JBI) manual for RCTs [25] and quasi-experimental studies [26]. The strengths and limitations were presented in a tabular form (Appendix Tables 6 and 7) for all studies. Studies were categorised into good and moderate quality studies based on their overall appraisal inclusion and exclusion criteria. If the selected studies met all included criteria in the JBI appraisal checklist, they were scored as good quality. Otherwise, the studies scored as moderate quality studies if they failed to meet some inclusion criteria from the checklist. Any discrepancies were resolved through discussion with the review team (NBH, SM, RH).


Search results

A total of 1502 original records were found during database searches; out of these, 610 studies were duplicates and were subsequently removed. After screening the titles and abstracts of the remaining 892 studies, 56 studies were selected for further consideration. After full-text screening, 50 articles were excluded due to ineligible study populations, mixed type of intervention, studies not considered as peer-counselling intervention, outcomes not related to complementary feeding and ineligible study design. The study selection and screening process is presented in a flow chart in Fig. 1.

Fig. 1
figure 1

Flow diagram of included and excluded studies

Only 6 studies met the inclusion criteria outlined above. Among the selected studies, 2 were conducted in Bangladesh [27, 28], 2 in India [29, 30], 1 in Nepal [31] and 1 study in Somalia [32]. Characteristics of the included studies are given in Table 1.


The type of intervention and the delivery provider, the number, duration, frequency, intensity of session in the interventions, varied between studies. A summary of the intervention characteristics is presented in Table 1.

Table 1 Characteristics of selected studies (n = 6)

Intervention type and provider

In 5 out of 6 studies, interventions were delivered by community-based peer counsellors [27,28,29, 31, 32], and in the other study the intervention was provided by a dual approach, where the intervention was delivered using both community health workers and a nutrition professional who fulfilled the definition of peer counselling as described above [30].

In 5 of our selected studies [27, 28, 30,31,32], the sessions were delivered face-to-face via either individual home visits or group meetings. In 1 quasi-experimental study, counselling was delivered using both home visits and later in a hospital [29].

Intervention numbers, frequency and sessions

Selected studies varied in intensity as some provided one-to-one counselling, while others provided group counselling [27,28,29,30,31,32]. Intervention visits ranged between 2 and 10 times in the first 6 months of a child’s age. One study in Bangladesh made 13 regular visits: 2 were before and during the first month of delivery, 7 visits occurred when the child was between 2 and 8 months and then single monthly visits during the child’s 10th and 11th month of life [28]. In the Delhi study, counselling was delivered in 3 visits during the 7th, 8th and 9th month of pregnancy and 2 further sessions were conducted when the baby was 5 months old [30]. The Lalitpur study provided intensive nutrition peer counselling, which was divided into 3 phases: 10 visits in first 6 months of the baby’s life (T1 phase), 6 visits during the next 6 months of life and then 3 follow-up visits in the 2nd year of the intervention phase (T2 phase), when the child was between 12 and 24 months [29].

Another study in Bangladesh was divided into 2 intervention groups and 1 control group for children aged 8–20 months [27]. Both intervention groups and the control group received 12 counselling sessions [27]. In addition, the 1st intervention group received 6 extra intensive nutrition counselling sessions and the 2nd intervention group received extra food sprinkles with 6 extra intensive counselling along with regular counselling [27]. Unfortunately, the study in Nepal lacked relevant information about the number and type of counselling sessions [32]. The study from Somalia provided 12 regular IYCF sessions for children aged 6–12 months for over a 3-month period [32].

Peer counsellors

Socio-demographic characteristics of peer counsellors

Although the age groups of the peer counsellors varied from young to middle age, the actual ages of the counsellors were not mentioned in most of the studies [27,28,29,30,31,32]. The majority of the peer counsellors were female [27,28,29,30,31], except in the study from Somalia, which included both male and female peer counsellors [32].

Local community health workers worked as peer counsellors in 2 of the studies [27, 30]. In 3 of the selected studies, married women with breastfeeding experience or at least 1 child under 2 years of age were selected as peer counsellors [28, 30, 31]. An Indian study used mother support groups (MSGs) of 3–4 members, including traditional birth attendants, experienced mothers, and community or nutrition workers, as their peer counsellor [29].

Recruitment and workload

Peer counsellors were all recruited from the same community, as specified in the inclusion criteria [27,28,29,30,31,32]. The number of peer counsellors allocated to intervention participants varied from one study to another; therefore, their workload also varied (Table 2).

Table 2 Peer selection and training of selected studies (n = 6)

One study from Bangladesh recruited 10 peer counsellors who served 350 mother–infant pairs, which included 30–35 mothers in each of the clusters [28]. While the Lalitpur study recruited 48 peer counsellors, who served 1426 mother–infant pairs at 2 time points: T1 phase (after 2 years of intervention) and T2 phase (after 5 years of intervention) [29].

Both 2 peer counsellors delivered the intervention to 426 mother–infant dyads in the Delhi study, where 213 were pregnant women and 198 were mother–infant dyads of 6–12 months [30]. The study in Nepal had 16 peer counsellors who served 1890 mother–infant pairs using baseline (April–May 2014) and end-line (May–June 2015) data [31].

Another study in Bangladesh provided no clear information about the number of peer counsellors serving 302 mother–infant pairs [27]. The study in Somalia, which used baseline and end-line surveys, reported 18 peer counsellors, including male and female counsellors, who served 250 mother–infant pairs [32]. They had 9 mothers and 9 fathers as peer counsellors who were responsible for providing the counselling to 10 mothers and 10 fathers within their own communities [32].


All studies reported some form of training for their peer counsellors [27,28,29,30,31,32]. Training durations and sessions varied from one study to another between 4 and 10 days apart from 1 study, which did not mention the time duration of the training [30]. The main messages conveyed from the training related to infant and young child feeding (IYCF) and study objectives. Three studies provided additional training materials such as picture books, flip-charts and handbooks [27, 30, 31]. Two of the selected studies provided follow-up support with monitoring and supervision of peer counsellor’s performance [28, 29]. Details of the peer counsellor trainings are described in Table 2.

Key findings related to complementary feeding

The key findings from each of these studies are described below and are summarised in Table 3.

Table 3 Summary of selected studies complementary feeding outcomes (n = 6)

Peer-counselling effects on timely initiation of complementary feeding

Out of the 6 studies, peer counselling was found to have improved timely introduction of complementary feeding in 2 studies [29, 30]. Four studies had no measurement for introduction of complementary foods [27, 30,31,32]. Both studies reported that the time of starting complementary feeding of target groups was, on average, 6–8 months of age [29, 30].

The Delhi study divided introduction of complementary foods according to age groups [30]; 78% of the infants from the intervention groups started receiving solid or semisolid foods when they were between 6–7 months of age [30], whereas only 19.4% children from the control group received solid or semi-solid foods at 6–7 months [30].

The Lalitpur study reported a significant effect (P = 0.001) of peer counselling on the timely initiation of complementary foods in both of the intervention phases—T1: 2 years post-intervention phase (OR 5.6, 95% CI 3.6, 8.7) and T2: 5 years post-intervention phase (OR 22.9, 95% CI 11.8, 44.1) compared to T0: pre-intervention phase [29].

Peer-counselling effects on minimum meal frequency (MMF)

Only 1 study in Bangladesh (the study by Ara and colleagues) [28] measured minimum meal frequency and reported increased meal frequency in the intervention group compared to the control (adjOR 2.08, 95% CI 1.39, 13.11, P = 0.001) [28].

Peer counselling effects on minimum dietary diversity (MDD)

Of the 6 studies, 5 measured dietary diversity [27, 28, 30,31,32], though measurements were taken in different ways. In most of the studies, MDD was measured based on the recommended 7 food groups. One study measured MDD based on cereal intake and another study measured it based on protein intake only. All 5 studies showed significant effects of peer counselling in improving child’s dietary diversity [27, 28, 30,31,32].

One study in Bangladesh assessed minimum dietary diversity based on protein (egg, flesh, organs) consumption [28]. Children aged between 7–12 months in the intervention group had almost twice as high (1.95 times) minimum dietary diversity (MDD) compared to the control group [28]. Egg (P = 0.045), fleshy food (P = 0.001) and overall total protein consumption (P = 0.001) in the intervention group were also significantly higher [28].

The study in Nepal measured MDD when the child was between 7–23.9 months old based on the 7 food groups—most of the children from the intervention group received at least 4 out of the 7 food groups, which was much higher than the children from the control group [31]. Mean difference of MDD was 4 times higher in the intervention group compared to the control group [31]. Both intervention groups (38.9% to 45.8%) reported improved dietary diversity at the end-line [31].

The study based in Delhi showed that the rate of attained MDD in the intervention group was 37.1%, as a direct result of peer counselling, compared to only 6.4% in the control group [30]. This study also mentioned peer counsellors’ effect on improving complementary food preparation methods, feeding skills and hygiene practices among the mothers [30].

In another study from Bangladesh, most of the children from the intervention group received food from at least 4 or more food groups out of the 7. At the end of the study, the intervention group’s mean MDD increased compared to the control group [27].

The study in Somalia categorised the food diversity in two parts: low dietary intake (less than 3 food groups out of the 7) and high dietary intake [4 or more groups out of the 7] [32]. At the end of the study, the intervention group reported higher dietary intake compared to the control group [32].

Peer-counselling effects on minimum acceptable diet (MAD)

Only one study from Bangladesh measured the effectiveness of the peer counselling on minimum acceptable diet, and the results were not significantly different between the control and intervention groups [28].

Quality assessment of the selected studies

The majority of studies (n = 4) were categorised as good quality [29,30,31,32]; 2 were categorised as moderate quality studies [27, 28] according to our quality assessment [25, 26]. In the studies categorised at moderate quality, it was unclear whether they met the requirement for follow-up participants, outcome measurement and statistical analysis [27, 28]. No studies were excluded on the basis of their study quality.

Breastfeeding and other outcomes

Out of the 6 studies, 5 had breastfeeding outcomes relating to the effects of peer counselling [28,29,30,31,32]. The Lalitpur study, India [29], the study in Bangladesh [28], the study in Delhi, India [30], the study in Somalia [32] and the study in Nepal [31], all reported increased rates of early initiation of breastfeeding, or colostrum feeding, followed by exclusive breastfeeding as a result of the peer counselling. Breastfeeding and other outcomes such as child nutritional status, child development, responsiveness, anthropometric measures (e.g., height, weight and length gain) and infant and young child feeding (IYCF) knowledge are listed in Appendix Tables 8 and 9.


To the best of our knowledge, this is the first narrative review that focuses on studies designed to improve complementary feeding through peer counselling in Asian and African countries. We have identified 3 randomised controlled trials [27, 28, 30] and 3 quasi-experimental studies [29, 32, 33]. The findings of our study provide some evidence on the effectiveness of peer counselling in improving a child’s complementary feeding practices. Improvements in minimum dietary diversity (MDD) and minimum meal frequency (MMF) were reported in 5 out of the 6 studies, and all of them showed improvement in increasing MMF and MDD [27, 28, 30,31,32]. Timely introduction of baby’s 1st complementary food was improved in 2 studies, [29, 30], whilst the other 4 studies lacked information regarding timely introduction of complementary foods [27, 30,31,32]. We also found that 5 of the selected studies lacked enough information to address the effectiveness of peer support on minimum acceptable diet (MAD) [27, 29,30,31,32]. Similar result found in a community-based cross-sectional study in Ethiopia that investigated MAD and associated factors [34]. The study reported low prevalence rate of MAD (31.6%) due to the lack of promotion of IYCF practices in that community [34].

Our findings are consistent with previous evidence. A recent systematic review and meta-analysis compared the effects of community, financial and technology-based nutrition interventions by community health workers, mother support groups or peer counsellors [35]. The research included 83 studies from low- and middle-income countries [35]. The meta-analysis showed improvement in minimum dietary diversity (OR 2.34; 95% CI 1.17, 4.70) and minimum meal frequency (OR 2.31; 95% CI 1.61, 3.31) in children from the mother–peer group compared to those from the usual care group. The review also showed improved rates of early initiation of breastfeeding (EIBF), exclusive breastfeeding (EBF) and reduced wasting [35]. A scoping review focused on the behavioural-change interventions for complementary feeding in low- and middle-income countries in 64 studies, which explored complementary feeding [36]. The results showed that counselling (individual or group) was the most effective and commonly used platform to improve complementary feeding practices compared to any other social behaviour-change intervention [36]. A systematic review of qualitative studies explored views and experiences of women, peer supporters and health professionals in breastfeeding peer support studies and reported a better mutual understanding between the women group and the peer supporters [37]. The women groups also reported the positive influence of peer supporters that helped them to gain more confidence and encouraged them to continue the breastfeeding [37].

In this review, 5 studies identified improvements in breastfeeding along with complementary feeding [27, 29,30,31,32], and they all showed significant positive impacts of peer counselling in increasing early initiation of breastfeeding and exclusive breastfeeding [27, 29,30,31,32]. Positive results were also found in breastfeeding counselling to improve breastfeeding practices from many previous studies [12, 28,29,30, 38, 19].

Our selected 6 studies have reported outcomes that are related to behaviour change. Child development measures like height, length, weight along with overall nutritional status of a child also showed improvement. Peer counselling had positive impacts on social developments such as language capacity, social activities, encouraging child to self-feed as well as hygiene-related outcomes like establishing hand washing stations [27,28,29,30,31,32]. This complexity of interventions and outcomes makes it difficult to determine the precise effects of peer counselling as an individual intervention in order to improve complementary feeding outcomes.

We found that information on training methods and content of peer-counselling sessions in some of the studies were not sufficient. There was also no analysis on the cost effectiveness of the interventions. Overall, a large knowledge gap was absorbed by all the participants [27,28,29,30,31,32].

In 5 of the 6 studies, counselling was delivered at home via individual or group visits and the peer counsellors were local community members. Only the Lalitpur study used a community facility and later a hospital facility as intervention sites [29]. It is important to mention that one study (the study by Vandana et al. in Delhi) used professional nutrition counselling for 1 of the subgroups together with community health workers [30], who were only dedicated to peer counselling, and thus included in our study [30].


One of the strengths in this review is that studies were included only if peer counselling was conducted by local counsellors and the peer counsellors were responsible for counselling targeted complementary feeding only and nothing else, nothing else means no other responsibilities other than counselling. Being locals, it was easier for the peer counsellors to gain the mother’s trust and confidence. In similar studies, peer counsellors are also burdened with multiple responsibilities such as nutrition education for women and other supplementation for children. This may have contributed towards the success of the interventions and a more effective counselling process than any other studies like cross-sectional or cohort studies. All of the selected studies quality were generally good, but the majority of RCT studies did not have allocation concealment and were not able to blind participants to the study groups as they were receiving the intervention. The majority of quasi-experimental studies used non-uniform comparison groups, which may have affected the generalisation of the outcomes.


One of the main limitations was the small number of studies (only 6 studies) that met the inclusion criteria. We excluded a large number of studies because, although they had either nutrition counselling or nutrition education, they did not have peer counsellors. We also excluded grey literatures due to full text unavailability sometimes. Therefore, all of those restricted the number of studies.

Although many studies included counselling, not all could be considered as ‘peer counselling’. The majority of the studies used additional interventions with peer counselling, and the outcomes were measured in different ways. So, it was difficult to compare the studies with regard to interventions and outcomes. For example, 1 of the studies from Bangladesh used psychological stimulation together with peer counselling [28], whereas the other Bangladeshi study used fortified food powder [27]. Apart from the selected studies, we can also see other studies such as the study by Campbell and colleagues [20], which used chickpea, plumpy’doz and wheat soya blend++ as supplementary foods, in addition to child feeding counselling [20].


This review highlights the positive effects of peer counselling on complementary feeding timing, minimum meal frequency, dietary diversity, all of which are significant for a child’s health and nutrition. This study focused solely on peer counselling, which can be used as an effective intervention in many low- and middle-income countries. This approach, if proven successful, can be adapted to include other nutrition actions and may inform other programs in the wider health sector.

Availability of data and materials

Not applicable.





Body mass index


Control group


Complementary feeding


Exclusive breastfeeding


Father-to-father group


Intervention group


Infant and young child feeding


Minimum dietary diversity


Minimum meal frequency


Minimum acceptable diet


Mother-to-mother group


Mother support group


Peer counselling plus psychological stimulation


Severe acute malnutrition


Standard deviation


Randomised controlled trial


Responsive feeding and stimulation


Responsive feeding and stimulation plus sprinkles


Socio-economic status


World Health Organization


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The authors thank Jeremy Cullis, librarian at Macquarie University for his contribution to training and literature searching.


The work has no financial support.

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NBH, SM and RH all were involved in study concept and design. NBH and SM independently extracted data and assessed the data quality. NBH wrote the first draft of the manuscript, and SM and RH were involved in critical revision and necessary corrections. The authors (NBH, SM, RH) read and approved the final manuscript.

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Correspondence to Nabila Binte Haque.

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See Tables 4, 5, 6, 7, 8 and 9.

Table 4 Keywords for search
Table 5 Definitions of complementary feeding indicators according to WHO and UNICEF. [22, 23]
Table 6 Joanna Briggs Institute’s critical appraisal checklist of randomised controlled trials for study quality assessment. [25]
Table 7 Joanna Briggs Institute’s critical appraisal checklist of quasi-experimental studies for study quality assessment. [26]
Table 8 Summary of selected studies breastfeeding outcomes (n = 5)
Table 9 Summary of selected studies of other outcomes (n = 5)

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Haque, N.B., Mihrshahi, S. & Haider, R. Peer counselling as an approach to improve complementary feeding practices: a narrative review. J Health Popul Nutr 42, 60 (2023).

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