Table 3 Sample descriptives
Non-respondents | Respondents | Total | |||||
|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | p for differencesa | |
Age (years) | <0.001 | ||||||
≤ 25 | 1026 | 27.2 | 957 | 19.5 | 1983 | 22.9 | |
> 25 ≤ 28 | 702 | 18.6 | 904 | 18.4 | 1606 | 18.5 | |
> 28 ≤ 31 | 691 | 18.3 | 1078 | 22.0 | 1769 | 20.4 | |
> 31 ≤ 35 | 789 | 21.0 | 1161 | 23.7 | 1950 | 22.5 | |
> 35 | 558 | 14.8 | 804 | 16.4 | 1362 | 15.7 | |
Parity | <0.000 | ||||||
First | 1416 | 37.6 | 2344 | 47.8 | 3760 | 43.4 | |
Second | 1323 | 35.1 | 1662 | 33.9 | 2985 | 34.4 | |
Third | 697 | 18.5 | 670 | 13.7 | 1367 | 15.8 | |
Fourth or more | 330 | 8.8 | 228 | 4.6 | 558 | 6.4 | |
Ethnicity | |||||||
Non-Norwegian, non-Western | 789 | 21.0 | 426 | 8.7 | 1215 | 14.0 | <0.000 |
Non-Norwegian, Western | 378 | 10.0 | 450 | 9.2 | 828 | 9.6 | <0.000 |
The birth | |||||||
Multiple birth | 60 | 1.6 | 69 | 1.4 | 129 | 1.5 | 0.476 |
Epidural or spinal anaesthesia (excluding caesarean) | 1075 | 28.5 | 1324 | 27.0 | 2399 | 27.7 | 0.115 |
Mode of delivery | 0.083 | ||||||
Vaginal delivery | 3144 | 83.7 | 3999 | 82.2 | 7143 | 82.9 | |
Emergency caesarean | 384 | 10.2 | 571 | 11.7 | 955 | 11.1 | |
Planned caesarean | 230 | 6.1 | 294 | 6.0 | 524 | 6.1 | |
Geographic region | 0.460 | ||||||
Southeast | 2039 | 54.1 | 2639 | 53.8 | 4678 | 54.0 | |
West | 664 | 17.6 | 901 | 18.4 | 1565 | 18.1 | |
Central | 580 | 15.4 | 781 | 15.9 | 1361 | 15.7 | |
North | 483 | 12.8 | 583 | 11.9 | 1066 | 12.3 | |
Institution size (no. of births per year) | 0.111 | ||||||
< 49 + other/unspecified | 30 | 0.8 | 41 | 0.8 | 71 | 0.8 | |
50–499 | 601 | 16.0 | 701 | 14.3 | 1302 | 15.0 | |
500–1499 | 920 | 24.4 | 1194 | 24.3 | 2114 | 24.4 | |
1500–2999 | 1232 | 32.7 | 1652 | 33.7 | 2884 | 33.3 | |
> 3000 | 983 | 26.1 | 1316 | 26.8 | 2299 | 26.5 | |
Marital status b | |||||||
Married | 2131 | 44.6 | |||||
Cohabiting | 2502 | 52.3 | |||||
Neither married nor cohabiting | 149 | 3.1 | |||||
Education b | |||||||
Primary school | 205 | 4.3 | |||||
High school | 1393 | 29.1 | |||||
University undergraduate | 1864 | 38.9 | |||||
University postgraduate | 1327 | 27.7 | |||||
Main activity when not on maternity leave b | |||||||
Working | 3839 | 80.1 | |||||
Sick leave or welfare allowances | 129 | 2.7 | |||||
Education | 350 | 7.3 | |||||
Homemaking | 126 | 2.6 | |||||
Unemployed | 279 | 5.8 | |||||
Other | 70 | 1.5 | |||||
Self-rated health b | |||||||
Poor | 52 | 1.1 | |||||
Fair | 312 | 6.5 | |||||
Good | 1366 | 28.6 | |||||
Very good | 2053 | 42.9 | |||||
Excellent | 1001 | 20.9 | |||||