Comparison 2. Reminder versus no reminder: type of test.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Type of test	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Oral glucose tolerance test	1	223	Risk Ratio (M‐H, Fixed, 95% CI)	3.98 [1.75, 9.05]
1.2 Fasting glucose tolerance test	1	223	Risk Ratio (M‐H, Fixed, 95% CI)	1.68 [1.10, 2.54]
1.3 Random glucose tolerance test	1	223	Risk Ratio (M‐H, Fixed, 95% CI)	2.42 [0.33, 17.91]
1.4 Glycated haemoglobin A1c test	1	223	Risk Ratio (M‐H, Fixed, 95% CI)	0.71 [0.31, 1.62]
1.5 Any test	1	223	Risk Ratio (M‐H, Fixed, 95% CI)	1.66 [1.15, 2.41]