Table 2.
Multivariate odds ratios of non-response to a second assessment of body weight in the EPIC-PANACEA studya
| |
Participants available for 2nd assessment (n = 460,691) |
|
||
|---|---|---|---|---|
| Number of participants n | Non-responders (n = 84,876) n (%) | ORb | 95% CI | |
|
Sex | ||||
| Missing |
0 |
|
|
|
| Male |
130,030 |
26,190 (20.1) |
1.0 |
|
| Female |
330,661 |
58,686 (17.7) |
0.92 |
0.90, 0.94 |
|
Age | ||||
| Missing |
0 |
|
|
|
| ≤40 years |
50,789 |
14,911 (29.4) |
1.0 |
|
| 41-60 years |
317,177 |
51,997 (16.4) |
0.48 |
0.47, 0.49 |
| >60 years |
92,725 |
17,968 (19.4) |
0.51 |
0.50, 0.53 |
|
Marital status | ||||
| Missing |
106,239 |
|
|
|
| Married/living together |
279,994 |
52,581 (18.8) |
1.0 |
|
| Living alonec |
74,458 |
19,077 (25.6) |
1.4 |
1.37, 1.43 |
|
Highest educational level | ||||
| Missing |
19,063 |
|
|
|
| College or university |
110,246 |
18,893 (17.1) |
1.0 |
|
| Other secondary school |
100,618 |
15,447 (15.4) |
0.93 |
0.90, 0.95 |
| Vocational secondary school |
104,299 |
23352 (22.4) |
1.08 |
1.05, 1.10 |
| Primary school or less |
126,465 |
22,300 (17.6) |
1.35 |
1.31, 1.38 |
|
Cambridge physical activity index | ||||
| Missing |
65,002 |
|
|
|
| Active |
73,596 |
13,859 (18.8) |
1.0 |
|
| Moderately active |
96,772 |
14,710 (15.2) |
0.98 |
0.95, 1.01 |
| Moderately inactive |
137,438 |
20,802 (15.1) |
0.99 |
0.96, 1.01 |
| Inactive |
87,883 |
14,593 (16.6) |
1.15 |
1.12, 1.19 |
|
Smoking status | ||||
| Missing |
9,722 |
|
|
|
| Never |
227,854 |
37,297 (16.4) |
1.0 |
|
| Former |
122,690 |
23,209 (18.9) |
1.02 |
1.00, 1.04 |
| Current |
100,425 |
22,452 (22.7) |
1.33 |
1.30, 1.35 |
|
Alcohol consumption | ||||
| Missing |
0 |
|
|
|
| Light alcohol users |
302,995 |
59,630 (19.7) |
1.0 |
|
| Non-users |
61,316 |
10,467 (17.1) |
1.18 |
1.15, 1.21 |
| Moderate alcohol users |
84,255 |
12,901 (15.3) |
0.96 |
0.93, 0.98 |
| Heavy alcohol users |
12,125 |
1,878 (15.5) |
1.12 |
1.06, 1.19 |
|
Cancer at baseline | ||||
| Missing |
16,618 |
|
|
|
| No |
423,646 |
76,910 (18.2) |
1.0 |
|
| Yes |
20,427 |
3,954 (19.4) |
0.86 |
0.81, 0.91 |
|
Chronic disease at baselined | ||||
| Missing |
45,998 |
|
|
|
| Healthy |
378,342 |
63,115 (16.7) |
1.0 |
|
| Disease |
36,351 |
7,027 (19.3) |
1.33 |
1.27, 1.39 |
|
Cancer before 2ndweight assessment | ||||
| Missing |
0 |
|
|
|
| No |
448,198 |
81,752 (18.2) |
1.0 |
|
| Yes |
12,493 |
3,124 (25.0) |
1.39 |
1.33, 1.45 |
|
BMI | ||||
| Missing |
334 |
|
|
|
| 18.5 - 25 kg/m2 |
236,019 |
43,404 (18.4) |
1.0 |
|
| < 18.5 kg/m2 |
6,868 |
1,451 (21.1) |
1.16 |
1.09, 1.23 |
| 25 - 29.9 kg/m2 |
157,093 |
29,072 (18.5) |
1.08 |
1.06, 1.10 |
| ≥ 30 kg/m2 |
60,377 |
10,850 (18.0) |
1.26 |
1.23, 1.29 |
|
Recruitment strategy | ||||
| Missing |
0 |
|
|
|
| Postal survey |
353,699 |
71,436 (20.2) |
1.0 |
|
| Approached by elephone |
76,924 |
2,546 (3.3) |
0.16 |
0.15, 0.16 |
| Requested to visit study center |
30,068 |
10,894 (36.2) |
2.7 |
2.58, 2.78 |
|
Mean follow-up time | ||||
| Missing |
0 |
|
|
|
| 0 - 4.0 years |
160,750 |
15,867 (9.9) |
1.0 |
|
| 4.1 - 8.0 years |
230,155 |
51,978 (22.6) |
3.00 |
2.91, 3.06 |
| 8.1 - 12.0 years | 69,786 | 17,031 (24.4) | 3.26 | 3.16, 3.36 |
Abbreviations: OR - odds ratio; CI - confidence interval.
a Participants who were not (yet) approached, died or (e)migrated during follow-up were not excluded in the present analyses.
b A multivariate logistic regression model was used with response status (0 = responder; 1 = non-responder) as the dependent variable and all baseline characteristics, recruitment strategy and mean follow-up time as independent variables. All variables are mutually adjusted.
c Single, divorced/separated, widowed.
d Hypertension, stroke, myocardial infarction, diabetes mellitus.