Table I.
Characteristics of participants in the Childbirth and Health Study 2009–2010 (percentages and absolute figures in parentheses or as otherwise described): Similar variables are shown for the entire birth cohort in Iceland in 2009.1
| Participants (n = 1111) | Iceland (n = 49392) | |
| Parity: | ||
| Primipara | 40 (439) | 40 (2005) |
| Multipara | 60 (671) | 60 (3021) |
| Age: | ||
| 18–19 | 2 (18) | 3 (185) |
| 20–24 | 15 (168) | 17 (841) |
| 25–29 | 36 (405) | 34 (1691) |
| 30–34 | 30 (328) | 29 (1434) |
| 35–39 | 14 (155) | 14 (722) |
| > 40 | 3 (37) | 3 (168) |
| Mean age (yrs) | 29.4 | 29.7 |
| Education: | ||
| Elementary | 11 (123) | 283 (18 000) |
| High school or similar | 26 (291) | 363 (23 100) |
| Technical education or university < 4 years | 26 (291) | X4 |
| University > 4 years | 36 (404) | 363,5 (23 100) |
| Combined higher education6 | 89 (986) | 723 (46 200) |
| Residence: | ||
| Capital area | 69 (763) | 67 (3378) |
| Rural area | 31 (347) | 33 (1648) |
| Marital status: | ||
| Married/cohabiting | 93 (1032) | 84 (4241) |
| Single | 3 (31) | X4 |
| Other | 4 (48) | 16 (785) |
Notes: 1Statistics Iceland, http://www.hagstofa.is (last checked on 2 April 2013). 2All deliveries in Iceland in 2009 (Icelandic Birth Register for 2009). 3Figures for pregnant women not available, but only for the total sample (n = 64 000) of all Icelandic women aged 20–49 years. 4No figures for comparison available. 5Counts all university education regardless of duration. 6All education after elementary school.