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Table 2 Crude odds ratios (OR) of physical-activity indicators according to selected key variables, adults aged 18-79

From: Physical activity patterns and socioeconomic position: the German National Health Interview and Examination Survey 1998 (GNHIES98)

  No. in samplea Vigorous work activity No. in sampleb Sports ≥ 2 hours/week Sitting time ≥ 8 hours/weekday High energy expenditurec
  OR 95% CI OR 95% CI OR 95% CI OR 95% CI
Total 3809   6800    
Education       
  primary 1291 8.6 (6.6-11.2) 2929 1.0 1.0 1.9 (1.6-2.3)
  secondary 1851 4.8 (3.7- 6.3) 2921 1.6 (1.4-1.8) 1.3 (1.2-1.5) 2.0 (1.7-2.4)
  tertiary 667 1.0 950 2.0 (1.6-2.4) 2.8 (2.3-3.3) 1.0
Covariates       
Occupation       
  low 1362 5.0 (4.1-6.1) 2675 1.0 1.0 1.7 (1.4-1.9)
  middle 1387 1.3 (1.1-1.6) 2225 1.5 (1.3-1.7) 2.0 (1.8-2.4) 1.0 (0.9-2.0)
  high 875 1.0 1260 2.0 (1.7-2.3) 2.6 (2.2-3.1) 1.0
Income       
  low 864 3.1 (2.5-3.7) 1819 1.0 1.0 1.7 (1.4-1.9)
  middle 1060 1.8 (1.5-2.2) 1856 1.3 (1.1-1.6) 1.3 (1.1-1.5) 1.5 (1.3-1.7)
  high 1296 1.0 1796 1.8 (1.6-2.1) 2.1 (1.8-2.5) 1.0
Vigorous work activity       
  yes 1522 - 1557 1.0 1.0 6.5 (5.6-7.4)
  no 2287 - 2319 1.6 (1.3-1.8) 4.5 (3.8-5.4) 1.0
Sports activity2 hours/week       
  yes 778 1.0 1258 - 1.1 (0.9-1.3) 1.5 (1.3-1.7)
  no 3031 1.6 (1.3-1.8) 5542 - 1.0 1.0
Sitting time weekdays       
  ≥ 8 hours 1564 1.0 1735 1.0 (0.9-1.2) - 1.0
  5 - < 8 hours 911 2.2 (1.8-2.7) 1929 1.0 (0.9-1.2) - 6.4 (5.3-7.8)
  < 5 hours 1334 6.8 (5.7-8.2) 2136 1.0 - 37 (31–46)
Body mass index       
  <25 1646 1.0 2705 3.2 (2.6-3.9) 1.1 (1.0-1.3) 1.0
  25 - <30 1497 1.1 (1.0-1.3) 2648 2.6 (1.8-2.8) 1.1 (0.9-1.2) 1.1 (1.0-1.3)
  ≥30 654 1.4 (1.2-1.7) 1403 1.0 1.0 1.0 (0.8-1.1)
Self-perceived health       
  excell./very good 936 1.0 1347 4.0 (3.2-5.0) 1.1 (0.9-1.3) 1.6 (1.3-1.9)
  good 2440 1.4 (1.2-1.7) 4258 1.6 (1.3-2.0) 0.9 (0.8-1.1) 1.5 (1.3-1.7)
  fair/poor 431 2.3 (1.8-2.9) 1192 1.0 1.0 1.0
  1. a Number of observations in the workforce study sample (respondents indicating that they are ‘currently working’). b Number of observations in the total study sample. c Energy expenditure assessed on the basis of self-reported activities within 24h, expressed in metabolic equivalents (MET) , high energy expenditure = 4th + 5th quintiles of MET index.