Table 3 The subgroup analysis of effect of H. pylori on the risk of GDM in pregnant women based on gestational age, type of detect H. pylori, and pregnant women age
Categories | No. of studies | Pooled relative risk (% 95 CI) | Between groups | Between subgroup | |||
|---|---|---|---|---|---|---|---|
I2 (%) | Q | P value | Q | P value | |||
H. pylori test | |||||||
ELISA | 4 | 1.852 (1.402–2.447) | 0.00 | 1.62 | 0.656 | 0.15 | 0.694 |
Other methods | 4 | 2.058 (1.318–3.213) | 0.00 | 1.19 | 0.55 | ||
Pregnant women age | |||||||
< 29 years | 3 | 2.728 (1.390–5.354) | 0.00 | 0.01 | 0.941 | 1.7 | 0.192 |
≤ 29 years | 3 | 1.671 (1.242–2.248) | 0.00 | 0.47 | 0.792 | ||
Gestational age | |||||||
< 30 weeks | 4 | 1.790 (1.337–2.396) | 0.00 | 1 | 0.605 | 0.04 | 0.843 |
30 weeks ≤ | 2 | 1.942 (0.918–4.106) | 11.45 | 1.13 | 0.288 | ||
Type of studies | |||||||
Case–control | 4 | 2.212 (1.590–3.064) | 0.00 | 0.98 | 0.819 | 0.89 | 0.342 |
Cohort | 4 | 1.788 (1.300–2.423) | 0.00 | 1.8 | 0.612 | ||