Table 1 Template for Intervention Description and Replication checklist of the study

BRIEF NAME

The effect of educational intervention based on self-efficacy theory on improving the nutritional status of the older adults

WHY (Rationale of treatment)

The main purpose of this controlled before and after study was to determine whether the educational intervention could be effective on the self-efficacy model for improving nutritional behaviors

WHAT (Materials)

The intervention is informed self-efficacy model

WHAT (Procedures)

This controlled before and after study comprised intervention and control groups. The intervention group received the full educational program. During the study, no intervention was performed in the control group. Focusing on self-efficacy key structures, four training sessions were organized that were explained in Table 2

WHO PROVIDED (Profession, expertise, background, specific training)

Training is provided by specialist health educators at the health care center

HOW (modes of delivery)

In the intervention group: Four training sessions were conducted face-to-face by lectures, group discussions, answers and questions

WHERE (Infrastructure and relevant features)

Primary health care centers

WHEN and HOW MUCH (Number of sessions, duration, intensity or dose)

Each senior participates in an educational program that consists of four 90-min sessions twice a week for one month

TAILORING (Personalization)

The training sessions in the study consisted of the following components, with each session standardized in terms of time and content: question and answer, Lectures, Educational pamphlets, Focus group discussions

MODIFICATIONS

Intervention follow-up was optimal for all participants

HOW WELL: planned (Follow and procedure to preserve it)

for all participants, following the intervention was optimal

HOW WELL: actual

Without any deviation from the organized protocol, the complete planned intervention program was delivered to all participants