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Table 1 Demographic characteristics of the study population, weighted (N = 8820)

From: Multimorbidity and health-related quality of life (HRQoL) in a nationally representative population sample: implications of count versus cluster method for defining multimorbidity on HRQoL

  n % Jack-knife standard error
Sex
 Male 4018 49.7 0.01
 Female 4802 50.4 0.01
Age
 Mean of age (yr.) 44 0.04
 16-25 years. 1551 17.4 0.3
 26-35 years. 1386 18.0 0.3
 36-45 years. 1586 19.0 0.4
 46-55 years. 1247 17.5 0.3
 56-65 years. 1293 14.2 0.2
 66-75 years. 1069 8.7 0.2
 76-85 years. 688 5.2 0.1
BMI (kg/m2)
 Thinness (BMI < 18.5) 254 2.7 0.2
 Normal (BMI 18.5–24.99) 3701 42.1 0.8
 Overweight (BMI 25.00–29.99) 2965 34.7 0.7
 Obesity (BMI >30.00) 1724 20.5 0.6
Educational attainment
 Has post-school qualification 4914 54.8 0.5
 No post-school qualification 3906 45.2 0.5
Labour force
 Employed 5491 65.2 0.2
 Unemployed 215 2.6 0.1
 Not in the labour force 3114 32.2 0.2
Level of exercise
 High 597 7.1 0.4
 Moderate 1754 20.2 0.7
 Low 6463 72.7 0.9
Registered marital status
 Unmarried 3996 47.0 0.7
 Married 4824 53.0 0.7
Smoking status
 Current smoker 1875 22.3 0.7
 Ex-smoker 2513 26.9 0.7
 Never smoked 4432 50.8 0.7
Index of Socio-Economic Disadvantage - Area deciles
 1st decile (lowest) 735 8.1 0.6
 2nd decile 789 8.6 0.8
 3rd decile 975 10.4 0.8
 4th decile 777 8.1 0.8
 5th decile 897 9.7 0.8
 6th decile 890 10.3 0.9
 7th decile 862 10.0 1.0
 8th decile 989 11.8 1.0
 9th decile 896 11.0 0.8
 10th decile (best) 1010 12.0 0.9
Number of health conditions
 0 3556 43.3 0.8
 1 2725 30.7 0.8
 2 1501 15.8 0.5
 3 697 6.8 0.3
 4 239 2.5 0.3
 5 79 0.6 0.08
 6 20 0.2 0.06
 7 3 0.02 0.01
  1. BMI Body Mass Index. Sample size (n) are showed based on the raw data, proportion (%) are estimated with standard error based on the weighting strategy