Table 2.
Piecewise exponential survival models for the association of WTC exposure, and OAD diagnosis, with CRS and GERD, separately.
| Estimate | Model 1—total effect of WTC exposure OAD ignored |
Model 2—effect of OAD diagnosis, WTC exposure ignored |
Model 3—regression direct effect of WTC exposure |
|||
|---|---|---|---|---|---|---|
| Relative rate | 95% CI | Relative rate | 95% CI | Relative rate | 95% CI | |
| Models for incidence of chronic rhinosinusitis | ||||||
| WTC exposure: high vs. low | 1.90 | 1.56–2.31 | N/A | 1.70 | 1.40–2.06 | |
| WTC exposure: high vs. moderate | 1.28 | 1.14–1.44 | N/A | 1.21 | 1.08–1.36 | |
| WTC exposure: moderate vs. low | 1.48 | 1.25–1.76 | N/A | 1.40 | 1.18–1.66 | |
| Effect of OAD diagnosis | N/A | 4.24 | 3.78–4.76 | 4.14 | 3.69–4.65 | |
| Models for incidence of gastroesophageal reflux disease | ||||||
| WTC exposure: high vs. low | 1.48 | 1.27–1.73 | N/A | 1.30 | 1.11–1.51 | |
| WTC exposure: high vs. moderate | 1.19 | 1.07–1.32 | N/A | 1.12 | 1.01–1.24 | |
| WTC exposure: moderate vs. low | 1.25 | 1.09–1.42 | N/A | 1.16 | 1.01–1.32 | |
| Effect of OAD diagnosis | N/A | 3.21 | 2.93–3.52 | 3.16 | 2.89–3.47 | |