Table I.
Comparison of 6-month follow-up questionnaire responders and non-responders
| Characteristica | Responders (n = 4966) | Non-responders (n = 2835) | Responders vs. Non- responders (p-value)b |
|---|---|---|---|
|
| |||
| Age, years, mean (SD)c | 57.1 (15.4) | 51.4 (16.6) | < 0.001 |
|
| |||
| Age categories, %c | < 0.001 | ||
| < 49 years, n = 2612 | 28.0 | 43.1 | |
| 49 to 63 years, n = 2640 | 34.9 | 32.1 | |
| > 63 years, n = 2549 | 37.2 | 24.8 | |
|
| |||
| Sex, % | 0.13 | ||
| Female, n = 4891 | 63.3 | 61.6 | |
| Male, n = 2910 | 36.7 | 38.4 | |
|
| |||
| Race/ethnicity, % | < 0.001 | ||
| White, n = 7054 | 92.7 | 86.4 | |
| Non-white, n = 747 | 7.3 | 13.6 | |
|
| |||
| Medical Assistance, ever, %c | < 0.001 | ||
| No, n = 6892 | 91.5 | 82.8 | |
| Yes, n = 909 | 8.5 | 17.2 | |
|
| |||
| EHR selection groups, %d | < 0.001 | ||
| CRS codes, n = 4777 | 63.1 | 58.1 | |
| Asthma or allergy codes, n = 1833 | 22.5 | 25.3 | |
| None of these codes, n = 1191 | 14.5 | 16.7 | |
|
| |||
| EPOS symptom status at baseline, %e | 0.97 | ||
| Current CRS, n = 1871 | 24.2 | 24.0 | |
| Past CRS, n = 2072 | 26.7 | 26.7 | |
| Never CRS, n = 3814 | 49.1 | 49.3 | |
|
| |||
| CRS EPOS symptom subgroup at baseline, % | 0.02 | ||
| OBS/DC, n = 618 | 35.0 | 29.6 | |
| PP, n = 689 | 35.7 | 38.8 | |
| SL, n = 330 | 18.2 | 16.7 | |
| PPSL, n = 234 | 11.1 | 14.9 | |
Percentages are reported as column %; 7847 returned baseline questionnaire, 7801 of these were mailed 6-month questionnaire
p-values are based on t-test for continuous variables and chi-square test for categorical variables
Status based on baseline questionnaire
Primary care patients were selected and mailed to, based on evidence of CRS, asthma, and allergic conditions in EHR: CRS codes = two or more ICD-9 codes 471.x or 473.x or CPT codes for sinus surgery, sinus endoscopy or sinus CT; asthma or allergy codes = one ICD-9 code for 471.x or 473.x or two or more ICD-9 codes for asthma (493.x) or allergic rhinitis (477.x); none of these codes = does not meet criteria for above groups
CRS status unknown due to missing data on 44 respondents. Current CRS = EPOS epidemiologic criteria fulfilled in the last 3 months; past CRS = EPOS epidemiologic criteria fulfilled in their lifetime but not in the last 3 months; never CRS = EPOS epidemiologic criteria not fulfilled ever
Abbreviations: CPT = Current Procedural Terminology; CRS = chronic rhinosinusitis; CT = computed tomography; EHR = electronic health record; EPOS = European Position Paper on Rhinosinusitis; ICD-9 = International Classification of Diseases; OBS/DC = obstruction and discharge only; PP = pain and/or pressure with at least one cardinal symptom (obstruction and or discharge); PPSL = pain and/or pressure, smell loss, and at least one cardinal symptom; SD: standard deviation; SL = smell loss with at least one cardinal symptom