Factors associated with number of painful procedures experienced in 24 h
| Predictor | Adjusted β coefficient (95% CI) | Test statistic | p Value |
|---|---|---|---|
| Omnibus likelihood ratio test (χ2, p value)* | 23.97 | 0.001 | |
| Birth weight (g) | |||
| <1000 | 0.12 (−1.995 to 2.235) | 0.012 | 0.911 |
| 1000–1500 | 0.342 (−0.437 to 1.121) | 0.740 | 0.39 |
| >1500 | 0.00 (Ref) | – | – |
| Born at site | |||
| No | 0.708 (−0.335 to 1.751) | 1.771 | 0.183 |
| Yes | 0.00 (Ref) | – | – |
| Ventilated | |||
| No | −1.929 (−2.737 to −1.12) | 21.871 | <0.001 |
| Yes | 0.00 (Ref) | – | – |
| Level of care | |||
| II | 1.516 (0.175 to 2.858) | 4.908 | 0.027 |
| I | 0.00 (Ref) | – | – |
| University affiliation | |||
| Yes | −0.125 (−1.172 to 0.922) | 0.055 | 0.815 |
| No | 0.00 (Ref) | – | – |
*Omnibus likelihood ratio test—tests whether explained variance is significantly greater than the unexplained variance in generalised estimation equations.19
Ref, refers to the reference category.