Sociodemographic characteristics of mother and babies at baseline by trial arm
| FNP N=766 | Usual care N=771 | |
| Maternal age at recruitment (years) | 17.9 (17.0 to 18.8) | 17.9 (16.9 to 18.8) |
| Ethnicity | ||
| White background | 675 (88.1%) | 680 (88.2%) |
| Mixed background | 44 (5.7%) | 38 (4.9%) |
| Asian background | 15 (2.0%) | 10 (1.3%) |
| Black background | 29 (3.8%) | 40 (5.2%) |
| Chinese or other background | <5 | <5 |
| Relationship status with baby’s father | ||
| Married | 6 (0.8%) | 10 (1.3%) |
| Separated | 72 (9.4%) | 78 (10.1%) |
| Closely involved/boyfriend | 582 (76.0%) | 586 (76.0%) |
| Just friends | 106 (13.8%) | 97 (12.6%) |
| NEET status* | ||
| Yes | 315/764 (41.1%) | 319/769 (41.4%) |
| No | 345/764 (45.0%) | 333/769 (43.2%) |
| IMD Overall Score† | 38.1 (24.6 to 52.6)‡ | 38.1 (25.5 to 51.6)§ |
| Generalised self-efficacy scale (score 10 to 40)¶ | 30.0 (28.0 to 33.0)** | 30.0 (27.0 to 32.0)†† |
| Adaptive functioning: | ||
| Difficulty in at least one basic skill | ||
| Yes | 213/765 (27.8%) | 184/770 (23.9%) |
| No | 552/765 (72.2%) | 586/770 (76.1%) |
| Had three or less life skills (out of 5) | ||
| Yes | 185/763 (24.2%) | 218/769 (28.3%) |
| No | 578/763 (75.8%) | 551/769 (71.7%) |
| At least one burden | ||
| Yes | 214/759 (28.2%) | 237/767 (30.9%) |
| No | 545/759 (71.8%) | 530/767 (69.1%) |
| Cigarette smoking participant self-reported | ||
| Ever smoked | ||
| Yes | 615 (80.3%) | 612 (79.4%) |
| No | 151 (19.7%) | 159 (20.6%) |
| Child characteristics | FNP N=773 | Usual care N=774 |
| Sex | ||
| Male | 381/773 (49.3%) | 406/773 (52.5%) |
| Female | 392/773 (50.7%) | 367/773 (47.5%) |
| Birth weight (grams) mean (SD) | 3223.81 (606.0)‡‡ | 3215.52 (555.56)§§ |
| NNU admission (direct or subsequent) | ||
| Yes | 76/716 (10.6%) | 66/749 (8.8%) |
| No | 640/716 (89.4%) | 683/749 (91.2%) |
Data are n (%), n/N (%), or median (25–75th centile) unless otherwise stated. <5 = numbers suppressed.
*Definition of NEET status: Not in education employment or training (applicable only to those whose age at end of previous academic year at time of baseline interview was >16).
†Higher IMD score indicated more deprivation. Mean IMD score for England in 2010 was 21.67 Wilkinson et al.43
‡N=760.
§N=765.
¶Higher score indicates higher level of self-efficacy.
**N=764.
††N=769.
‡‡N=724.
§§N=752.
FNP, family nurse partnership; IMD, Index of Multiple Deprivation; NEET, not in education, employment or training; NNU, neonatal unit.