Table 2.

Summary weighted differences comparing prompted general practice care with hospital care

Outcome	Weighted difference in mean values (95% CI)		χ2 test of between trial heterogeneity	P value
	Favours prompted GP care	Favours hospital care
Glycated haemoglobin (%) (3 trials, n=535)	−0.28 (−0.59 to 0.03)		3.90	>0.10
Systolic blood pressure (mm Hg) (2 trials, n=369)		1.62 (−3.30 to 6.53)	2.56	>0.10
Diastolic blood pressure (mm Hg) (2 trials, n=369)		0.56 (−1.69 to 2.80)	0.10	>0.75
Frequency of review (per patient per year) (2 trials, n=402)	0.27 (0.07 to 0.46)		0.59	>0.30
Frequency of glycated haemoglobin test (per patient per year) (2 trials, n=402)	1.60 (1.45 to 1.75)		0.05	>0.80