Generalised linear regression equation (gamma model with a log link) of the relationship between total healthcare costs and overall disability levels (n=125 UK children)*
| Variable | Coefficient | SE | P values | Multiplicative effect |
| Trial arm† | 0.552 | 0.374 | 0.140 | 1.74 |
| Delivery complications‡ | 0.597 | 0.390 | 0.126 | 1.82 |
| Gestational age | −0.145 | 0.121 | 0.230 | 0.87 |
| Birth weight | −0.0002 | 0.0003 | 0.393 | 1.00 |
| Male gender§ | −0.286 | 0.336 | 0.395 | 0.75 |
| Mild disability¶ | 0.841 | 0.538 | 0.119 | 2.32 |
| Moderate disability¶ | 2.531 | 0.60 | 0.000 | 12.56 |
| Severe disability¶ | 3.311 | 0.437 | 0.000 | 27.43 |
| Constant | 11.850 | 4.471 | 0.008 | – |
*Five children were missing characteristics at trial entry and were excluded from the model.
†Hypothermia arm relative to base category of control arm.
‡Relative to base category of no delivery complications.
§Relative to base category of female.
¶Relative to base category of no disability.