Table 2 Crude and adjusted regression analysis of diagnostic time up to 3 months and independent variables in patients with rheumatoid arthritis in Blumenau, Santa Catarina, Brazil, 2014
Variables | Crude analysis | Adjusted analysis | ||||
|---|---|---|---|---|---|---|
(PRc) | CI 95% | p | (PRa) | CI 95% | p | |
Sex (n = 296) | 0,146 | 0,154** | ||||
Male | 0,84 | (0,6-1,0) | 0,85 | (0,6-1,0) | ||
Female | 1 | 1 | ||||
Age in years (n = 287) | 0,200 | 0,267** | ||||
20–39 | 1 | 1 | ||||
40–59 | 0,83 | (0,6-1,0) | 0,84 | (0,6-1,0) | ||
≥ 60 | 0,80 | (0,6-1,0) | 0,81 | (0,6-1,0) | ||
Education in completed years (n = 284) | 0,459* | 0,314** | ||||
0–4 | 0,93 | (0,7-1,1) | 0,90 | (0,7-1,0) | ||
5–8 | 1,08 | (0,9-1,2) | 1,07 | (0,9-1,2) | ||
> 9 | 1 | 1 | ||||
Current monthly personal income in minimum wages (n = 248) | 0,801* | 0,622** | ||||
Third tertile (higher) | 1 | 1 | ||||
Second tertile | 1,01 | (0,8-1,2) | 1,01 | (0,8-1,2) | ||
First tertile (lower) | 0,97 | (0,8-1,1) | 0,95 | (0,7-1,1) | ||
Body mass index (Kg/m2) (n = 285) | 0,010 | 0,031 | ||||
≤ 24,9 | 1 | 1 | ||||
25–29,9 | 1,18 | (0,9-1,4) | 1,16 | (0,9-1,4) | ||
≥ 30 | 1,26 | (1,0-1,5) | 1,23 | (1,0-1,5) | ||
Type of servicee in the last 12 months (n = 269) | 0,177 | 0,623** | ||||
Public healthcare system | 0,87 | (0,7-1,0) | 0,95 | (0,7-1,1) | ||
Supplementary healthcare system | 0,95 | (0,8-1,1) | 0,96 | (0,8-1,1) | ||
Fee-for-service care | 1 | 1 | ||||
Total number of consultations with a rheumatologist in the last 12 months (n = 281) | 0,165 | 0,163** | ||||
0–1 | 0,86 | (0,6-1,1) | 0,85 | (0,6-1,0) | ||
2–3 | 1 | 1 | ||||
≥ 4 | 0,89 | (0,7-1,0) | 0,89 | (0,7-1,0) | ||
Disease time in months (n = 235) | 0,247* | 0,605** | ||||
0–24 | 1 | 1 | ||||
> 24 | 1,16 | (0,8-1,5) | 1,07 | (0,8-1,3) | ||
Use of csDMARD (n = 296) | 0,383* | 0,283** | ||||
Yes | 1 | 1 | ||||
No | 1,06 | (0,9-1,2) | 1,12 | (0,9-1,3) | ||
Use of TNFi (ADA + ETA+IFX) (n = 288) | 0,960* | 0,277** | ||||
Yes | 0,99 | (0,8-1,1) | 0,88 | (0,7-1,0) | ||
No | 1 | 1 | ||||
HAQ (n = 165) | 0,901* | 0,587** | ||||
0–1 (mild) | 1 | 1 | ||||
1,1–2 (moderate) | 0,89 | (0,7-1,1) | 0,86 | (0,6-1,1) | ||
2,1–3 (severe) | 1,01 | (0,8-1,2) | 0,92 | (0,6-1,3) | ||
Presence of radiological changes (erosions) in hands (n = 237) | 0,814* | 0,306** | ||||
No | 1 | 1 | ||||
Yes | 0,98 | (0,8-1,1) | 1,13 | (0,8-1,4) | ||
Current professional situation (237) | 0,324* | 0,637** | ||||
Working | 1 | 1 | ||||
Health insurance | 0,99 | (0,7-1,2) | 0,99 | (0,7 – 1,4) | ||
Disability retirement | 0,94 | (0,7-1,1) | 0,89 | (0,6 – 1,1) | ||
Retirement for time of service | 0,91 | (0,7-1,1) | 0,95 | (0,7 – 1,2) | ||