Table II.
Selected demographic variables by categories of follow-up status (current vs. not current CRS) on the 6-month questionnaire by baseline status (current, past, and never), resulting in six longitudinal symptom subgroupsa
| CRS Current at Baseline n = 1143 | CRS Past at Baseline n = 1249 | CRS Never at Baseline n = 2344 | ||||
|---|---|---|---|---|---|---|
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| Characteristicb | Follow-up Status Current CRS n = 558 | Follow-up Status Not Current CRS n = 585 | Follow-up Status Current CRS n = 190 | Follow-up Status Not Current CRS n = 1059 | Follow-up Status Current CRS n = 83 | Follow-up Status Not Current CRS n = 2261 |
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| Group label | Persistent | Non-persistent | Recurrent | Stable past | Incident | Never |
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| Percent of responders, n = 4966 | 11.2 | 11.8 | 3.8 | 21.3 | 1.7 | 45.5 |
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| Percent of baseline status in each of two groups at follow-up | 48.9 | 51.2 | 15.2 | 84.8 | 3.5 | 96.5 |
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| Age, years, mean (SD)c | 54.9 (14.0) | 54.4 (14.5) | 54.4 (13.8) | 55.0 (14.5) | 60.0 (15.6) | 58.6 (16.0) |
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| Age categories, %c | ||||||
| < 49 years, n = 1367 | 30.7 | 34.0 | 31.1 | 31.7 | 21.7 | 25.7 |
| 49 to 63 years, n = 1731 | 41.8 | 38.3 | 38.4 | 38.3 | 30.1 | 31.1 |
| > 63 years, n = 1846 | 27.6 | 27.7 | 30.5 | 29.9 | 48.2 | 43.3 |
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| Female, %, n = 3145 | 67.4 | 69.4 | 64.7 | 63.8 | 54.2 | 60.6 |
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| White race/ethnicity, %, n = 4604 | 95.7 | 96.9 | 95.3 | 93.4 | 97.6 | 90.5 |
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| Medical Assistance, ever, %, n = 421c | 14.2 | 12.7 | 12.1 | 7.4 | 14.5 | 6.3 |
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| Smoking status, %c | ||||||
| Current, n = 611 | 16.7 | 16.4 | 15.8 | 10.9 | 12.0 | 10.5 |
| Former, n = 1549 | 29.9 | 29.6 | 35.8 | 28.9 | 47.0 | 31.3 |
| Never, n = 2806 | 53.4 | 54.0 | 48.4 | 60.2 | 41.0 | 58.2 |
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| EHR selection groups, %d | ||||||
| CRS codes, n = 3131 | 82.1 | 77.1 | 76.8 | 70.4 | 73.5 | 49.0 |
| Asthma or allergy codes, n = 1117 | 13.8 | 19.3 | 18.4 | 22.2 | 18.1 | 26.8 |
| None of these codes, n = 718 | 4.1 | 3.6 | 4.7 | 7.4 | 8.4 | 24.2 |
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| Sinus surgery in the past 6 months, %, n = 88 | 3.9 | 3.8 | 4.2 | 1.8 | 1.2 | 0.6 |
Unknown CRS status at 6-month follow-up questionnaire, n = 230
Percentages are reported as column %
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
Abbreviations: CPT = Current Procedural Terminology; CRS = chronic rhinosinusitis; CT = computed tomography; EHR = electronic health record; ICD-9 = International Classification of Diseases; SD = standard deviation