Mean age at assessment |
Initial | 5.8 (SD 2.3) months |
Range | 2.0–12.0 months |
Follow-up | 47.4 (SD 4.5) months |
Range | 3 years 3 months to 4 years |
| 9 months |
Mean age difference between assessments | 3.5 (SD 0.4) years |
Range | 2.6–4.4 years |
Gender |
Male | 91 (70.5) |
Female | 38 (29.5) |
Parity |
Firstborn | 90 (69.8) |
Later-born | 39 (30.2) |
Gestation |
<37 weeks | 22 (17.1) |
Term | 107 (82.9) |
Multiple birth (missing=5) |
Yes | 8 (6.4) |
No | 116 (93.6) |
Difficult delivery |
Yes | 30 (23.3) |
No | 99 (76.7) |
Breastfeeding |
Never or <1 month | 34 (26.3) |
≥1 month | 95 (73.7) |
Infant's ethnicity |
New Zealand European | 82 (63.6) |
New Zealand Maori | 14 (10.8) |
Pacific | 15 (11.6) |
Asian | 17 (13.2) |
Other | 1 (0.8) |
Socioeconomic status |
Low (0–40) | 9 (7.0) |
Medium (41–60) | 58 (45.0) |
High (>60) | 62 (48.0) |
Maternal qualifications |
Low (none or school certificate) | 23 (17.8) |
Medium (sixth form or Bursary) | 23 (17.8) |
High (professional or tertiary qualification) | 83 (64.3) |
Age plagiocephaly first noticed (weeks) |
Mean (SD) | 6.9 (4.7) |
Range | 0–22.0 |
Age first seen in clinic |
<6 months | 77 (59.7) |
≥6 months | 52 (40.3) |
Neck dysfunction at initial assessment (missing=1) |
Yes | 80 (62.5) |
No | 48 (37.5) |