Table 4.
Association between survey participation and enrollees’ health conditions
| Poor/fair health at wave 2 | PTSD > =44 at wave 2 | Recurrent LRS b at wave 2 | ||||
|---|---|---|---|---|---|---|
| Wave 3 drop-outs (N = 9,868) | AORa | 95% CI | AORa | 95% CI | AORa | 95% CI |
| 1.4*** | 1.3, 1.4 | 1.2*** | 1.2, 1.3 | 1.2*** | 1.1, 1.3 | |
| Three-wave participants (n = 36,252) | reference | |||||
| Poor/fair health at wave 3 | PTSD > =44 at wave 3 | Recurrent LRS b at wave 3 | ||||
| Wave 3 drop-ins (N = 6,682) | AORa | 95% CI | AORa | 95% CI | AORa | 95% CI |
| 1.3*** | 1.2, 1.4 | 1.4*** | 1.3, 1.5 | 1.2*** | 1.1, 1.3 | |
| Three-wave participants (n = 36,252) | reference | |||||
Abbreviations: AOR, adjusted odds ratio; CI, confidence interval; PTSD, probable posttraumatic stress disorder; LRS, lower respiratory symptoms.
*P < 0.05; **P < 0.01; ***P < 0.0001.
aAdjusted for study recruitment source, sex, age, race, income, eligibility group, education, survey mode, and wave 1 exposure.
bEnrollees who reported at least 1 of 3 symptoms - shortness of breath, persistent cough, or wheezing - for the first time at wave 1 (i.e., post-9/11) and for 8 or more days (consecutive or nonconsecutive) in the last 30 days at wave 2 or wave 3.