Skip to main content

Table 4 Risk ratios and 95 % confidence intervals for the association between educational level and having outcome measures of rheumatoid arthritis decrease over the median, or achieve remission

From: Higher education is associated with a better rheumatoid arthritis outcome concerning for pain and function but not disease activity: results from the EIRA cohort and Swedish rheumatology register

Visits University/college degree Outcome values decrease over the median or achieve remission
No Yes Risk ratio crude (95 % CI) Risk ratio* (95 % CI)
DAS28 low disease activity
 3 months No 960 (76.4) 297 (23.6) 1.0 ref. 1.0 ref.
Yes 789 (74.8) 266 (25.2) 1.05 (0.95 to 1.16) 1.00 (0.91 to 1.11)
 6 months No 737 (78.2) 206 (21.8) 1.0 ref. 1.0 ref.
Yes 801 (77.3) 235 (22.7) 1.02 (0.93 to 1.13) 0.98 (0.88 to 1.09)
 1 year No 822 (78.2) 229 (21.8) 1.0 ref. 1.0 ref.
Yes 1160 (75.4) 379 (24.6) 1.07 (0.99 to 1.14) 1.04 (0.97 to 1.13)
DAS28 good response
 3 months No 1073 (75.9) 340 (24.1) 1.0 ref. 1.0 ref.
Yes 642 (75.3) 211 (24.7) 1.02 (0.91 to 1.16) 0.98 (0.86 to 1.11)
 6 months No 829 (78.1) 233 (21.9) 1.0 ref. 1.0 ref.
Yes 682 (77.8) 195 (22.2) 1.01 (0.90 to 1.14) 0.96 (0.85 to 1.08)
 1 year No 964 (78.5) 264 (21.5) 1.0 ref. 1.0 ref.
Yes 960 (75.0) 320 (25.0) 1.10 (1.01 to 1.20) 1.07 (0.98 to 1.17)
DAS28 remission
 3 months No 1214 (76.6) 371 (23.4) 1.0 ref. 1.0 ref.
Yes 535 (73.6) 192 (26.4) 1.11 (0.97 to 1.28) 1.11 (0.97 to 1.28)
 6 months No 962 (78.3) 267 (21.7) 1.0 ref. 1.0 ref.
Yes 576 (76.8) 174 (23.2) 1.05 (0.92 to 1.20) 1.00 (0.87 to 1.15)
 1 year No 1141 (78.2) 318 (21.8) 1.0 ref. 1.0 ref.
Yes 841 (74.4) 290 (25.6) 1.12 (1.02 to 1.24) 1.11 (1.00 to 1.23)
VAS-pain decrease over the median
 3 months No 831 (75.3) 273 (24.7) 1.0 ref. 1.0 ref.
Yes 882 (76.8) 266 (23.2) 0.96 (0.87 to 1.06) 1.06 (0.97 to 1.16)
 6 months No 750 (77.9) 213 (22.1) 1.0 ref. 1.0 ref.
Yes 763 (78.3) 212 (21.7) 0.99 (0.89 to 1.10) 1.08 (0.98 to 1.19)
 1 year No 938 (75.9) 298 (24.1) 1.0 ref. 1.0 ref.
Yes 991 (77.5) 288 (22.5) 0.96 (0.87 to 1.05) 1.05 (0.96 to 1.14)
VAS-pain remission
 3 months No 1055 (79.0) 281 (21.0) 1.0 ref. 1.0 ref.
Yes 710 (71.6) 282 (28.4) 1.25 (1.13 to 1.38) 1.13 (1.02 to 1.26)
 6 months No 892 (79.7) 227 (20.3) 1.0 ref. 1.0 ref.
Yes 663 (75.4) 216 (24.6) 1.14 (1.02 to 1.28) 1.08 (0.96 to 1.22)
 1 year No 1115 (79.0) 297 (21.0) 1.0 ref. 1.0 ref.
Yes 890 (73.6) 319 (26.4) 1.17 (1.07 to 1.28) 1.10 (1.00 to 1.21)
HAQ decrease over the median
 3 months No 796 (76.9) 239 (23.1) 1.0 ref. 1.0 ref.
Yes 842 (74.8) 283 (25.2) 1.05 (0.96 to 1.16) 1.11 (1.02 to 1.21)
 6 months No 706 (79.0) 188 (21.0) 1.0 ref. 1.0 ref.
Yes 734 (76.6) 224 (23.4) 1.07 (0.96 to 1.18) 1.10 (0.99 to 1.21)
 1 year No 872 (78.6) 237 (21.4) 1.0 ref. 1.0 ref.
Yes 949 (74.6) 323 (25.4) 1.11 (1.02 to 1.20) 1.15 (1.06 to 1.25)
  1. Risk ratio crude: poisson regression estimates without adjustment. Risk ratio*: poisson regression estimates adjusted for age at the diagnosis, gender, alcohol assumption, pack-years of smoking, body mass index, and baseline outcome values. DAS28 disease activity in 29 joints, VAS visual analog scale, HAQ health assessment questionnaire