Table 5 Overall injury rate and relative rates among socioeconomic tertiles estimated by different proceduresa
From: Modelling memory decay after injuries using household survey data from Khartoum State, Sudan
Estimation procedure | Months included in recall period | Model effect of time since injury | Total rate estimate (per 100 person-years) | Relative rate, lower vs. middle socioeconomic tertile | Relative rate, upper vs. middle socioeconomic tertile |
|---|---|---|---|---|---|
Crudeb | 1 | None | 22.6 | 2.01 | 1.20 |
Crudeb | 1–3 | None | 17.6 | 1.99 | 1.20 |
Crudeb | 1–11 | None | 8.7 | 1.68 | 1.15 |
Crudeb | 1–12 | None | 9.0 | 1.69 | 1.16 |
Predicted model-based valuec | 1 | None | 22.6 | 1.62 | 1.48 |
Predicted model-based valuec | 1–11 | None | 8.8 | 1.62 | 1.19 |
Predicted model-based valuec | 1–11 | Common log-quadratic effect | 23.3 | 1.61 | 1.19 |
Predicted model-based valuec | 1–11 | Separate log-quadratic effects within socioeconomic tertiles | 23.3 | 2.27 | 1.28 |