Table 4.

 Visiting rates in intervention and control group practices at baseline and follow-up while adjusting for clustering, baseline differences, and prespecified covariates*. Values are means (standard deviations) unless stated otherwise

Variable	Valid No at baseline/follow-up			Baseline			Follow-up		Intracluster correlation coefficient	Mean difference (95% CI)	P value
	Intervention group	Control group		Intervention group	Control group		Intervention group	Control group
Visits to general practitioner†	397/426	434/444		5.5 (3.8)	4.8 (4.2)		8.3 (5.7)	7.6 (6.0)	0.105	0.29 (−0.97 to 1.56)	0.64
Visits to practice nurse†	397/426	434/444		2.1 (2.9)	1.5 (2.2)		4.6 (4.2)	1.8 (2.2)	0.340	3.00 (1.75 to 4.15)	0.00

*See footnote to table 2 for relevant covariates.

†Analysis of hospital admissions and practice visits carried out on adjusted end points rather than change over time, owing to different data collection intervals at baseline (12 months) and follow-up (18 months).