Table 3 Crude and adjusted regression analysis of diagnostic time up to 12 months and independent variables in patients with rheumatoid arthritis in Blumenau, Santa Catarina, Brazil, 2014
Variables | Crude analysis | Adjusted analysis | ||||
|---|---|---|---|---|---|---|
(RPc) | CI 95% | p | (PRa) | CI 95% | p | |
Sex (n = 296) | 0,704* | 0,720** | ||||
Male | 1,08 | (0,7-1,6) | 1,07 | (0,7-1,6) | ||
Female | 1 | 1 | ||||
Age in years (n = 287) | 0,894* | 0,920** | ||||
20–39 | 1 | 1 | ||||
40–59 | 0,91 | (0,4-1,7) | 0,91 | (0,6-1,7) | ||
≥ 60 | 0,96 | (0,4-1,8) | 0,95 | (0,4-1,8) | ||
Education in completed years (n = 284) | 0,094 | 0,041 | ||||
0–4 | 1,37 | (0,9-2,1) | 1,59 | (1,1 - 2, 5) | ||
5–8 | 1,20 | (0,7-1,8) | 1,29 | (0,7-2,1) | ||
> 9 | 1 | 1 | ||||
Current monthly personal income in minimum wages (n = 248) | 0,496* | 0,741** | ||||
Third tertile (higher) | 1 | 1 | ||||
Second tertile | 0,96 | (0,6-1,4) | 0,91 | (0,5-1,4) | ||
First tertile (lower) | 1,11 | (0,7-1,6) | 1,07 | (0,7-1,6) | ||
Body mass index (Kg/m2) (n = 285) | 0,001 | 0,001 | ||||
≤ 24,9 | 1 | 1 | ||||
25–29,9 | 1,55 | (1,0-2,3) | 1,62 | (1,0-2,4) | ||
≥ 30 | 1,97 | (1,2-2,9) | 2,07 | (1, 3 - 3,1) | ||
Type of servicee in the last 12 months (n = 269) | 0,515* | 0,997** | ||||
Public healthcare system | 0,86 | (0,5-1,3) | 1,01 | (0,6-1,6) | ||
Supplementary healthcare system | 0,97 | (0,6-1,4) | 0,90 | (0,5-1,4) | ||
Fee-for-service care | 1 | 1 | ||||
Total number of consultations with a rheumatologist in the last 12 months (n = 281) | 0,074 | 0,223** | ||||
0–1 | 0,75 | (0,4-1,2) | 0,79 | (0,4-1,3) | ||
2–3 | 1 | 1 | ||||
≥ 4 | 0,72 | (0,5-1,0) | 0,79 | (0,5-1,1) | ||
Disease time in months (n = 235) | 0,134 | 0,115** | ||||
0–24 | 1 | 1 | ||||
> 24 | 1,57 | (0,8-2,8) | 1,76 | (0,8-3,5) | ||
Use of csDMARD (n = 296) | 0,994* | 0,744** | ||||
Yes | 1 | 1 | ||||
No | 0,99 | (0,7-1,3) | 1,08 | (0,6-1,7) | ||
Use of TNFi (ADA + ETA+IFX) (n = 288) | 0,588* | 0,217** | ||||
Yes | 0,91 | (0,6-1,2) | 0,75 | (0,4-1,1) | ||
No | 1 | 1 | ||||
HAQ (n = 165) | 0,227* | 0,867** | ||||
0–1 (mild) | 1 | 1 | ||||
1,1–2 (moderate) | 0,68 | (0,4-1,1) | 0,78 | (0,6-1,1) | ||
2,1–3 (severe) | 0,76 | (0,4-1,2) | 0,82 | (0,6-1,3) | ||
Presence of radiological changes (erosions) in hands (n = 237) | 0,668* | 0,877** | ||||
No | 1 | 1 | ||||
Yes | 1,08 | (0,7-1,5) | 1,03 | (0,6-1,6) | ||
Current professional situation (237) | 0,125 | 0,088** | ||||
Working | 1 | 1 | ||||
Health insurance | 1,11 | (0,6-1,8) | 1,34 | (0,8 – 2,1) | ||
Disability retirement | 0,99 | (0,6-1,4) | 0,85 | (0,5 – 1,3) | ||
Retirement for time of service | 0,67 | (0,4-1,1) | 0,68 | (0,4 – 1,1) | ||