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Table 2 Subgroup analysis of the prevalence of gestational diabetes mellitus in Africa, 2013–2018

From: Prevalence and determinants of gestational diabetes mellitus in Africa based on the updated international diagnostic criteria: a systematic review and meta-analysis

Subgroup Number of studies Total
Sample
Prevalence (95%CI) Heterogeneity
Q-value Df I2 P-value
Sub-region
 East Africa 6 2444 16.76 (8.47, 25.05) 102.242 5 97.6 <  0.001
 Southern Africa 3 2992 14.28 (6.22, 22.35) 49.0036 2 97.3 <  0.001
 West Africa 8 4500 10.72 (7.52, 13.91) 18.7272 7 93.4 <  0.001
 Central Africa 3 816 20.04 (1.55, 38.54) 259.1118 2 97.9 <  0.001
 Northern Africa 2 950 7.57 (5.89, 9.25) 0.00 1 0.00 0.774
 Sub Saharan African countries 20 10,752 14.28 (11.39, 17.16) 39.6514 19 96.4 <  0.001
Publication year of study
 2013 2 1226 9.75 (3.08, 16.41) 21.5605 1 93.3 <  0.001
 2015 2 1458 8.78 (7.33, 10.23) 0.0000 1 0.0 0.679
 2016 3 434 19.27 (6.63, 31.91) 113.7686 2 91.7 <  0.001
 2017 10 4922 14.55 (9.69, 19.40) 58.1562 9 97.7 <  0.001
 2018 5 3662 12.67 (8.78, 16.55) 17.1333 4 91.9 <  0.001
Risk of bias
 Low 12 7488 13.49 (10.08, 16.90) 33.9381 11 96.6 <  0.001
 Moderate 3 817 14.56 (3.19, 25.94) 96.6674 2 96.5 <  0.001
 High 7 3397 13.77 (8.14, 19.41) 52.1874 6 95.7 <  0.001
Study design
 Cross-sectional study 13 7769 10.14 (7.86, 12.41) 15.0084 12 92.1 <  0.001
 Prospective study 9 3933 19.09 (12.35, 25.82) 100.7873 8 97.9 <  0.001