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Table 1 Description of studies among pregnant women in India

From: Pooled estimate of vitamin D deficiency among pregnant women in India: a systematic review and meta-analysis

References

Location

Sample

size

Study design Prevalence

Sachan et al. 2005 [31]

Lucknow

(North )

207

Cross-sectional 66.6%

Farrant et al. 2009 [32]

Mysore

(South )

559

Cross-sectional 66.0%

Sahu et al.

2009 [33]

Lucknow

(North)

139

Cross-sectional 74.0%

Marwaha et al. 2011 [7]

Delhi

(North)

541

Cross-sectional 96.30%

Jani et al.

2014 [9]

Mumbai

(West )

150

Cross-sectional 94.0%

Singla et al.

2015 [34]

Chandigarh

(North)

304

Prospective cohort 92.11%

Ajmani et al.

2016 [35]

Delhi

(North)

200

Cross-sectional 37.50%

Sharma et al. 2016 [36]

Delhi

(North)

418

Prospective cohort 34.54%

Krishnaveni et

al. 2011 [37]

Mysore

(South)

568

Prospective cohort 66.0%

Veena et al.

20162017 [38]

Mysore

(South)

468

Prospective cohort 66.8%

Nandal et al.

2016 [39]

Haryana

(North)

60

Prospective cohort 93.75%

Kumar

et al. 2015 [40]

Bengaluru

(South)

106

Prospective cohort 70.70%

Chary et al.2015

2014 [41]

Hyderabad

(South)

153

Prospective cohort 52.2%

Dasgupta

et al. 2012 [42]

Guwahati

(North-East)

50

Cohort 42.00%

Sablok et al.

2015 [43]

Delhi

(North)

165

RCT 77.50%

  1. ELISA enzyme-linked immunosorbent assay, CI confidence interval, RCT randomized control trials