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Table 4 Non-responder analysis: SOLAR II questionnaire data compared for participants of the questionnaire part and the clinical part of the study

From: Study on Occupational Allergy Risks (SOLAR II) in Germany: Design and methods

%

95% CI1

Questionnaire

part only (n = 884)

Questionnaire and clinical part (n = 1167)

Female

56.3

53.1; 59.6

59.5

56.6; 62.3

High level of education2

52.5

49.1; 55.8

70.0

67.4; 72.7

High parental level of education3

54.2

50.8; 57.5

62.4

59.6; 65.2

Student

36.3

33.1; 39.4

50.5

47.6;53.3

Current occupation: health care sector

13.1

10.9; 15.4

14.7

12.7; 16.8

Smoker

44.0

40.7; 47.3

32.0

29.3; 34.7

Passive smoke exposure

(regularly)

63.3

60.1; 66.5

51.5

48.6;54.3

Job with high-risk

exposure4

25.8

22.5;29.2

32.3

29.2; 35.3

Job with low-risk

exposure4

23.0

19.8; 26.2

19.9

17.3; 22.5

Job without risk

exposure4

36.3

32.6; 39.9

39.7

36.5; 42.8

Current wheeze5

16.3

13.9; 18.8

17.2

15.1; 19.4

Doctor diagnosed asthma

8.3

6.4; 10.1

9.3

7.6; 10.9

Current allergic rhinitis6

22.1

19.3; 24.9

27.0

24.4; 29.5

Current atopic dermatitis7

11.3

9.2; 13.4

13.1

11.1; 15.0

Parental allergic disease8

42.9

39.7; 46.2

48.6

45.7; 51.5

  1. 1 95% CI: 95% Confidence Interval
  2. 2 at least 12 years of education
  3. 3 at least one parent with a minimum of 12 years of education
  4. 4 exposure to agents with potential asthma risk was assessed by means of an asthma-specific job-
  5. exposure matrix (JEM)
  6. 5 wheezing in the last 12 months
  7. 6 problems with sneezing or a runny or blocked nose (without having a cold) accompanied by itchy-
  8. watery eyes in the last 12 months
  9. 7 itching eczema in the last 12 months persisting at least 6 months
  10. 8 asthma, allergic rhinitis or atopic dermatitis
  11. bold: statistically significant differences between groups