From: Non-response bias in physical activity trend estimates
 | n | 1995-1998 % (CI*) | 1999-2002 % (CI*) | 2007 % (CI*) |
---|---|---|---|---|
Number of calls made to reach the someone in the household | Â | Â | Â | Â |
1 to 2 | 10,394 | 35.5 (33.4-37.7) | 38.3 (36.6-40.1) | 41.6 (33.2-50.6) |
3 to 4 | 6182 | 34.4 (31.8-37.2) | 38.2 (36.0-40.6) | 32.9 (26.1-40.4) |
5 to 9 | 6493 | 35.9 (32.1-39.9) | 42.9 (39.6-46.3) | 43.4 (36.7-50.2) |
10 or more | 3427 | 35.4 (31.9-39.0) | 40.1 (37.0-43.2) | 39.1 (31.7-47.0) |
Number of calls answered by someone in the household | Â | Â | Â | Â |
1 | 10 372 | 36.9 (34.8-39.1) | 40.6 (38.9-42.3) | 29.7 (19.3-42.8) |
2 | 6114 | 33.9 (31.1-36.7) | 38.0 (35.8-40.3) | 44.0 (37.3-51.1) |
3 or more | 10 010 | 34.8 (32.8-36.9) | 39.8 (37.9-41.7) | 37.6 (33.0-42.4) |
Number of contacts with the selected respondent | Â | Â | Â | Â |
1 | 19 570 | 36.0 (34.5-37.6) | 40.5 (39.2-41.7) | 40.7 (32.9-49.0) |
2 | 4186 | 35.6 (32.3-39.1) | 37.0 (34.0-40.2) | 37.9 (33.3-42.8) |
3 or more | 2740 | 30.8 (27.2-34.5) | 36.4 (32.9-40.0) | 40.8 (31.6-50.7) |
Final completion status | Â | Â | Â | Â |
Agreed to participate during 1st contact | 23813 | 35.8 (34.4-37.2) | 40.1 (39.0-41.3) | 39.2 (34.9-43.7) |
Initial refusal; converted to completion by senior interviewer | 2683 | 31.7 (28.0-35.7) | 35.7 (32.4-39.2) | 39.6 (32.2-46.5) |