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Table 1 Quality assessment of the pooled estimates of complementary feeding intervention on child growth:

From: Impact of maternal education about complementary feeding and provision of complementary foods on child growth in developing countries

Quality Assessment Summary of findings
     Generalizability Pooled Effect
No. of studies (ref) Design Limitations Consistency Generalizability to Population of Interest Generalizability to intervention of Interest Mean difference ( 95 % CI)
Effect of provision of complementary food (± education) on weight gain (kg): Quality of evidence: Moderate
11[25, 26, 2830, 33, 34, 3638, 41] RCT/cRCT/quasi experimental Results are highly inflated by study by Obatolu et al. [29]. This study is also the major contributor to heterogeneity of the pooled estimate. Heterogeneity 92 %. Random effect models used. All the studies from developing countries Provision of appropriate complementary food to children 6-24 months of age 0.25 (0.07-0.44) kg
Effect of provision of complementary food (± education) on height gain (cm): Quality of evidence Moderate
11[25, 26, 2830, 33, 34, 3638, 41] RCT//quasi experimental Results are highly inflated by study by Obatolu et al. [29]. This study is also the major contributor to heterogeneity of the pooled estimate. Heterogeneity 80 %. Random effect models used. All the studies from developing countries Provision of appropriate complementary food to children 6-24 months of age 0.54 (0.16-0.93) cm
Effect of education of mother about complementary feeding on weight gain (kg): Quality of evidence: Moderate
8[26, 27, 31, 32, 35, 37, 39, 40] RCT/quasi experimental Some of the included studies were not randomized controlled trials and it was not possible to blind the intervention in most of the studies. One of the major contributor to summary estimate and heterogeneity was study by Guldan et al. [39]. This study include mother of neonates Heterogeneity 92 %. Random effect models used All the studies from developing countries Educational messages emphasized on continuity of breastfeeding, timing and frequency of complementary food, counseling on preparation of suitable food based on available local food 0.30 (0.04, 0.55)
Effect of education of mother about complementary feeding on height gain (cm): Quality of evidence: Moderate
7[26, 27, 31, 32, 35, 37, 39] RCT/quasi experimental Some of the included studies were not randomized controlled trials and blinding assessment was not possible in most of the studies. Results for pooled estimates were not statistical significant. One of the major contributor to summary estimate and heterogeneity was study by Guldan et al. [39]. This study include mother of neonates Heterogeneity 88 %. Random effect models used All the studies from developing countries Educational messages emphasized on continuity of breastfeeding, timing and frequency of complementary food, counseling on preparation of suitable food based on available local food 0.49 (-0.00-0.99)