Table 2 Quality assessment of studies of balanced protein energy supplementation during pregnancy to prevent stillbirths
Quality Assessment | Directness | Summary of findings | ||||||
|---|---|---|---|---|---|---|---|---|
No. of studies (Ref) | Design | Limitations | Consistency | Generalizability to Population of Interest | Generalizability to intervention of Interest | Events in intervention group | Events in control group | Relative Risk ( 95 % CI) |
Stillbirth: Low outcome specific quality | ||||||||
3 | RCT and quasi RCT | Methods of sequence generation and allocation concealment were not adequate in two of the included studies | Heterogeneity in the pooled data was not significant (I2=20%) | One of the study from developed country (USA); however, the participants in this study were from lower socioeconomic status | Different studies used different composition of formula for delivery of balance protein energy. | 18 | 31 | 0.55 (0.31-0.97) |