Table 1 Characteristics of non-participants and participants in the questionnaire survey
Frequency (%) among non- participants (N = 5,628) | Frequency (%) among participants (N = 12,058) | |
|---|---|---|
Age group (years) | ||
25-29 | 25.3 | 23.4 |
30-34 | 22.7 | 24.7 |
35-39 | 24.1 | 25.3 |
40-45 | 27.9 | 26.7 |
Residential region in Norway | ||
Oslo (capital) | 18.1 | 15.4 |
Eastern (minus Oslo) | 36.9 | 38.5 |
Western | 29.2 | 28.7 |
Northern | 15.8 | 17.4 |
Median income in residential municipality (NOK) 1 | ||
240,000-290,000 | 20.2 | 17.8 |
290,001-310,000 | 18.4 | 17.7 |
310,001-320,000 | 17.3 | 17.1 |
320,001-360,000 | 22.1 | 23.0 |
360,001-450,000 | 22.0 | 24.3 |