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Table 2 Crude and socio-demographic-adjusted prevalence rates of physical conditions and subjective health measures by mode (GEDA 2.0 pilot study, Germany, August – November 2012)

From: Mode differences in a mixed-mode health interview survey among adults

  Crude prevalence Adjusted prevalence*
  SAQ-Paper SAQ-Web CATI SAQ-Paper vs. SAQ-Web SAQ-Paper vs. CATI SAQ-Web vs. CATI SAQ-Paper SAQ-Web CATI SAQ-Paper vs. SAQ-Web SAQ-Paper vs. CATI SAQ-Web vs. CATI
  % % % p-value p-value p-value % % % p-value p-value p-value
Physical conditions             
Diagnosed diabetes             
12-month-prevalence 11.1 4.8 10.1 <0.001 n.s. <0.01 9.3 7.1 8.9 n.s. n.s. n.s.
Diagnosed hypertension             
12-month prevalence 36.6 22.0 33.1 <0.001 n.s. <0.001 31.6 29.2 29.8 n.s. n.s. n.s.
Diagnosed dyslipidaemia             
12-month prevalence 25.9 15.7 23.0 <0.001 n.s. <0.01 21.4 23.2 20.4 n.s. n.s. n.s.
Obesity (BMI ≥ 30)             
Point prevalence 20.9 15.2 16.8 <0.05 n.s. n.s. 19.5 18.7 16.3 n.s. n.s. n.s.
Diagnosed CHD             
Lifetime prevalence 9.0 3.4 9.9 <0.001 n.s. <0.001 6.9 6.3 9.3 n.s. n.s. n.s.
Diagnosed chronic bronchitis             
Lifetime prevalence 8.8 4.6 11.2 <0.01 n.s. <0.001 7.7 4.9 10.3 n.s. n.s. <0.01
Diagnosed bronchial asthma             
Lifetime prevalence 10.3 9.2 16.6 n.s. <0.01 <0.01 10.0 9.2 16.0 n.s. <0.01 <0.01
Diagnosed osteoarthrosis             
Lifetime prevalence 29.8 14.7 24.9 <0.001 n.s. <0.001 25.3 21.1 21.6 n.s. n.s. n.s.
Subjective health             
MEHM: Self-rated health             
Very good 11.0 18.8 18.3 <0.001 <0.01 n.s. 13.2 14.8 19.0 n.s. <0.05 n.s.
Poor/very poor 4.1 2.7 4.9 n.s. n.s. n.s. 3.4 4.4 4.2 n.s. n.s. n.s.
MEHM: Chronic health problem             
Yes 44.2 32.2 44.5 <0.001 n.s. <0.001 40.0 39.4 42.3 n.s. n.s. n.s.
MEHM: Daily activity limitations             
Yes 37.5 21.8 33.1 <0.001 n.s. <0.001 33.4 28.1 29.9 n.s. n.s. n.s.
  1. SAQ-Paper = self-administered paper mail questionnaire; SAQ-Web = self-administered web survey; CATI = computer-assisted telephone interview.
  2. *adjusted for age, gender, education, income, labour status, marital status, type of household.
  3. CHD = coronary heart disease.
  4. MEHM = Minimum European Health Module.
  5. n.s. = not significant (p > 0.05); vs. = versus.