Age (month) | Normal gross motor skills (N = 38) | Delayed gross motor skills (N = 13) | Relative risk (RR) (95% CI) |
[12 - 36[ | 19 | 6 | 1.040 (0.755 - 1.433) |
[36 - 66[ | 19 | 7 | 0.891 (0.347 - 2.287) |
Total | 38 | 13 | 1.167 (0.330 - 4.122) |