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Table 2 Results of heterogeneity and publication bias estimation and subgroup meta-analysis for prevalence of gestational diabetes based on various GDM screening strategy group among pregnant women

From: The impact of diagnostic criteria for gestational diabetes on its prevalence: a systematic review and meta-analysis

  Sample size of participants I2% P value for Begg’s test Pooled overall prevalence (95% CI)
GDM screening categorya
 1 722,312 98 0.139 0.106 (0.105–0.106)
 2 1,662,369 99 1.000 0.065 (0.057–0.072)
 3 138,812 98 0.298 0.089 (0.071–0.107)
 4 176,966 0 0.317 0.022 (0.022–0.023)
 5 2,086,957 99 0.443 0.051 (0.051–0.051)
 6 493,168 98 0.851 0.029 (0.028–0.029)
 7 68,892 99 0.051 0.044 (0.013–0.074)
 Overall 5,349,476 99 0.070 0.44 (0.043–0.044)
  1. aGroups are defined as follows
  2. Group 1 or HAPO definition who was screened based on OGTT with 75 g 2-h. Threshold: one value above 92, 180 and 153 mg/dL for fasting, 1, 2 and 3 h
  3. Group 2 who was screened based on OGTT with 75 g 2-h. Threshold: one value above 100 and 144 mg/dL for fasting and 2 h
  4. Group 3 who was screened based on OGTT with 75 g 2-h. Threshold: one value above 110 and 140 mg/dL for fasting, 1 and 2 h
  5. Group 4 who was screened based on OGTT with 75 g 2-h. Threshold: value above 180 mg/dL for 2 h
  6. Group 5 who was screened based on GCT with 50 g 1-h GCT, threshold: values above 140 mg/dL following OGTT with 100 g 3-h. Threshold: two value above 95, 180, 155 and 140 mg/dL for fasting, 1, 2 and 3 h or GCT with 50 g 1-h GCT, threshold: values above 140 mg/dL following OGTT with 75 g 3-h. Threshold: two value above 95, 180, 155 and 140 mmol/L for fasting, 1, 2 and 3 h
  7. Group 6 who was screened based on glucose challenge test (GCT) with 50 g 1-h, Threshold: 140 mg/dL following oral glucose tolerance test (OGTT) with 100 g 3-h. Threshold: Two value above 105 or 190, 155, 165 and 145 mg/dL for fasting, 1, 2 and 3 h
  8. Group 7 who was screened based on OGTT with 100 g 3-h. Threshold: one value above 120, 175, 155 and 140 mg/dL for fasting, 1, 2 and 3 h