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Table 2 Multivariate odds ratios of non-response to a second assessment of body weight in the EPIC-PANACEA study a

From: Determinants of non- response to a second assessment of lifestyle factors and body weight in the EPIC-PANACEA study

 

Participants available for 2ndassessment (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 baseline d

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 2 nd weight 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

  1. Abbreviations: OR - odds ratio; CI - confidence interval.
  2. a Participants who were not (yet) approached, died or (e)migrated during follow-up were not excluded in the present analyses.
  3. 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.
  4. c Single, divorced/separated, widowed.
  5. d Hypertension, stroke, myocardial infarction, diabetes mellitus.
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BMC Medical Research Methodology

ISSN: 1471-2288

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