Table 3. Raw data for example described in Box 2.

Practice no.	Intervention start time	Time measured (months)
		0	6	12	18	24
1	6 months	48.05	48.75	49.60	50.75	50.40
2		51.30	53.00	51.10	51.45	51.95
3		48.30	47.05	47.70	47.40	47.00
4		52.00	51.75	51.65	52.15	49.25
5		51.45	52.25	52.55	52.25	51.50
6		51.20	53.90	53.25	53.30	52.65
7		50.35	50.60	52.25	50.50	52.20
8		52.10	48.90	50.20	53.00	48.85
9	12 months	50.90	52.05	52.25	51.05	52.85
10		50.70	50.70	49.40	49.45	51.45
11		49.05	49.05	49.10	48.45	48.70
12		49.90	48.95	49.55	49.80	49.20
13		48.85	51.75	52.25	50.45	50.60
14		48.65	49.55	49.80	49.90	51.10
15		47.40	48.25	48.40	48.85	49.35
16		48.90	49.05	48.90	48.05	47.35
17	18 months	53.60	52.75	50.50	53.60	51.90
18		48.25	50.30	48.15	47.10	50.10
19		50.50	51.10	49.00	49.45	51.75
20		47.55	47.55	47.60	48.25	47.45
21		49.10	49.00	49.70	49.45	48.45
22		51.50	51.65	50.90	49.70	51.65
23		48.60	48.40	48.00	47.10	50.75
24		49.50	49.50	50.35	51.45	50.95
25	24 months	51.65	50.30	48.10	49.75	51.05
26		48.45	52.05	49.15	50.65	49.20
27		50.35	51.00	50.00	51.20	50.20
28		51.20	50.70	51.45	52.00	50.15
29		47.20	49.20	49.70	48.55	49.10
30		46.10	47.20	47.60	45.75	45.70
31		51.35	48.05	51.25	49.30	49.70
32		49.25	48.00	48.45	51.75	49.70