Table 1 Distribution of adults responding to Canadian Physical Activity Monitor by stages in participant recruitment, 1995-2007
From: Non-response bias in physical activity trend estimates
| Â | % (95% CI) | 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 | 37.6 (36.4-38.7) | 38.5 (36.4-40.6) | 38.2 (36.6-39.8) | 22.0 (17.6-27.3) |
3 to 4 | 23.8 (23.1-24.6) | 24.2 (22.9-25.5) | 23.3 (22.3-24.3) | 26.7 (23.4-30.3) |
5 to 9 | 24.7 (24.0-25.5) | 24.1 (22.9-25.4) | 24.9 (23.9-25.9) | 27.9 (24.8-31.4) |
10 or more | 13.9 (13.3-14.5) | 13.2 (11.9-14.7) | 13.6 (12.5-14.8) | 23.3 (19.0 28.2) |
Number of calls answered by someone in the household | Â | Â | Â | Â |
1 | 36.2 (35.4-37.0) | 35.6 (33.7-37.6) | 39.1 (37.6-40.7) | 6.9 (4.8-9.9) |
2 | 23.6 (22.8-24.3) | 22.8 (21.2-24.5) | 23.3 (22.1-24.5) | 33.3 (28.7-38.3) |
3 or more | 40.2 (39.4-41.1) | 41.6 (39.7-43.5) | 37.6 (36.1-39.2) | 59.8 (54.6-64.9) |
Number of contacts with the selected respondent | Â | Â | Â | Â |
1 | 73.4 (72.6-74.2) | 73.4 (71.6-75.2) | 78.0 (76.6-79.3) | 20.2 (16.3-24.8) |
2 | 15.9 (15.2-16.5) | 14.8 (13.5-16.3) | 12.5 (11.5-13.5) | 64.5 (59.3-69.3) |
3 or more | 10.7 (10.2-11.3) | 11.8 (10.6-13.1) | 9.5 (8.7-10.4) | 15.3 (12.1-19.3) |
Final completion status | Â | Â | Â | Â |
Agreed to participate during 1st contact | 88.5 (87.9-89.1) | 88.8 (87.6-89.8) | 89.5 (88.6-90.4) | 74.5 (70.4-78.3) |
Initial refusal; converted to completion by senior interviewer | 11.5 (10.9-12.1) | 11.2 (10.2-12.4) | 10.5 (9.6-11.4) | 25.5 (21.7-29.6) |