Table 2 Baseline parent characteristics
| Â | Group A. Parents of preterm infants | Group B. Parents of full-born infants | ||
|---|---|---|---|---|
|  | Mothers, n = 25 (100%) (Responders, n = 16) | Fathers, n = 25 (100%) (Responders, n = 14) | Mothers, n = 76 (100%) (Responders, n = 58) | Fathersb, n = 76 (100%) (Responders, n = 46) |
|  | Median (min–max) | Median (min–max) | Median (min–max) | Median (min–max) |
Age | 30.5 (27.0–36.0) | 32.0 (27.0–36.0) | 31.5 (22.0–42.0) | 33.0 (25.0–44.0) |
Body mass index (kg/m2) | 25.1 (19.9–39.8) | 25.3.0 (19.6–34.4) | 24.4 (19.6–38.6) | 26.6 (20.7–35.9) |
| Â | n (%) | n (%) | n (%) | n (%) |
Ethnicity | Â | Â | Â | Â |
 Norway | 15 (93.8) | 13 (92.9) | 50 (86.2) | 42 (91.3) |
 Nordic Country | 1 (6.3) |  | 1 (1.7) | 2 (4.4) |
 Europe |  |  | 2 (3.4) | 1 (2.2) |
 Asia |  |  | 2 (3.4) |  |
 South-America |  | 1 (7.1) | 2 (3.4) | 1 (2.2) |
 Africa |  |  | 1 (1.7) |  |
Parity | Â | Â | Â | Â |
 0a | 12 (75.0) | 11 (78.6) | 38 (65.5) | 29 (63.0) |
 1 | 4 (25.0) | 3 (21.4) | 14 (24.1) | 10 (21.7) |
 2 |  |  | 5 (8.6) | 6 (13.0) |
 3 |  |  | 1 (1.7) | 1 (2.2) |
Education (level/years) | Â | Â | Â | Â |
 Primary school (up to 10 years) |  |  |  | 1 (2.2) |
 Secondary school (up to 13 years) | 4 (25.0) | 7 (50.0) | 10 (17.0) | 9 (20.0) |
 University/college (up to 4 years) | 3 (18.8) | 4 (28.6) | 22 (37.9) | 12 (26.1) |
 University/college (> 4 years) | 8 (50.0) | 3 (21.4) | 26 (44.8) | 22 (47.8) |
 Other | 1 (6.3) |  |  | 2 (4.3) |
Annual income (NOK) | Â | Â | Â | Â |
 0–399,000 | 5 (31.3) | 3 (21.4) | 12 (20.7) | 7 (15.6) |
 400,000–499,000 | 3 (18.8) | 3 (21.4) | 18 (31.0) | 4 (8.7) |
  ≥ 500,000 | 8 (50.0) | 8 (57.1) | 28 (48.3) | 35 (76.1) |
Employment status | Â | Â | Â | Â |
 Non-income-generating work situation | 1 (6.3) | 2 (14.3) | 6 (10.3) | 3 (6.5) |
 Income-generating work situation | 15 (93.8) | 12 (85.7) | 52 (89.7) | 43 (93.5) |
Missing (nonresponders) | 9 (36.0) | 11 (44.0) | 18 (23.7) | 30 (38.3) |