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. 2017 Dec 29;7(12):e018899. doi: 10.1136/bmjopen-2017-018899

Table 1.

Sociodemographic characteristics in percentage among respondents, the sample frame and the weighted sample, supplemented with non-response analysis

Respondents (n=1215) Sample frame
(n=4 000)
Weighted data set Respondents versus non-respondents
χ2 (P values)
Gender 0.4 (0.52)
  Men 62.8 63.5 63.5
  Women 37.2 36.5 36.5
Age groups (years) 68.7 (<0.01)
 18–29 23.3 30.8 30.7
 30–39 32.9 33.7 33.5
 40–49 24.3 21.0 21.0
 50–64 19.5 14.6 14.8
Marital status 78.9 (<0.01)
  Married 63.5 52.9 57.5
  Unmarried 31.8 40.8 38.0
  Divorced/widow/widower 4.8 6.4 4.6
Level of educational 47.2 (<0.01)
  0–9 years 40.2 46.4 47.0
 >9 years without a university degree 21.0 22.3 22.0
 >12 years with a university degree 38.7 31.5 31.0
Year of immigration* 34.0 (<0.01)
 ≤2011 6.5 10.1 10.3
 2012 27.5 29.5 29.3
 2013 66.0 60.4 60.4

*This variable indicates the year the individual arrived to Sweden and should not be confused with year for being granted residency used as inclusion criteria.