Table 3.

Average number of sessions carried out by GP principals by age and sex

	Male			Female
Age yrs.	n	sessions	SD	n	sessions	SD	p
≤29	10	9.1	0.2	26	8.3	1.3	NS
30–34	88	8.7	1.2	110	7.2	1.9	<0.001
35–39	156	8.5	1.3	197	6.9	2.0	<0.001
40–44	291	8.8	1.3	222	8.0	1.9	<0.001
45–49	328	8.9	1.4	197	7.1	1.8	<0.001
50–54	290	8.8	1.5	130	8.4	1.7	<0.001
55–59	235	8.7	1.5	64	7.6	1.8	<0.001
60–64	60	8.4	2.0	14	7.8	2.4	NS
≥65	12	8.3	0.7	2	6.5	3.5	NS
Total	1470	8.8	1.4	962	7.2	1.9	<0.001

Missing data 44