Birth Weight as a Continuous Variable and Birth Weight for
Gestational Age Z-score
Nine36,39-41,61,63-66 and
three60,62,63 studies reported birth weight as a
continuous variable and birth weight for gestational age z-score as
outcome measures, respectively. Pooled results for the associations were
not statistically significant (women in the top tertile compared with
the bottom tertile. For birth weight, beta: -7.8; 95 CI: -56.0, 40.5;
I2 = 79%; P-heterogeneity <0.01; Figure S6.
For birth weight for gestational age z-score, beta: 0.0; 95 CI: -0.1,
0.2; I2 = 74%; P-heterogeneity =0.02; Figure S7.).
All studies were of high quality (NOS score ≥7) (Table S2).