Skip to main content
. 2022 Feb 1;12(2):e056668. doi: 10.1136/bmjopen-2021-056668

Table 3.

Factors associated with the EQ-5Dutility index and VAS scores: results of multivariate regression models (n=150)

Variables EQ-5Dutility index EQ-5D VAS score
β 95% CI P value Tolerance VIF β 95% CI P value Tolerance VIF
Constant 1.224 −0.591 to 3.038 0.185 0.256 −1.641 to 2.154 0.790
Age (vs <25 years) −0.157 −0.282 to −0.032 0.014 0.806 1.241 −0.128 −0.259 to 0.003 0.055 0.806 1.241
Urban residency (vs urban) −0.127 −0.468 to 0.213 0.460 0.825 1.212 −0.197 −0.553 to 0.159 0.275 0.825 1.212
Married (vs unmarried) 0.084 −0.246 to 0.414 0.616 0.783 1.276 0.035 −0.311 to 0.380 0.843 0.783 1.276
Inhibitory antibody (vs no) 0.003 −0.470 to 0.475 0.991 0.873 1.146 −0.137 −0.631 to 0.357 0.584 0.873 1.146
Severe (vs mild/moderate) −0.198 −0.497 to 0.101 0.193 0.876 1.131 −0.033 −0.345 to 0.280 0.837 0.876 1.142
Two or more target joints (vs <2) −0.422 −0.642 to −0.202 <0.001 0.885 1.131 −0.340 −0.571 to 0.110 0.004 0.885 1.131
Prophylaxis (vs on-demand) 0.053 −0.384 to 0.491 0.809 0.848 1.179 0.297 −0.160 to 0.755 0.201 0.848 1.179
Not working (vs employed) −0.373 −0.714 to −0.031 0.033 0.929 1.077 −0.101 −0.458 to 0.256 0.576 0.929 1.077
Hepatitis (vs no) 0.211 −0.169 to 0.590 0.274 0.849 1.178 0.328 −0.069 to 0.725 0.104 0.849 1.178
High knowledge (vs low) 0.398 0.039 to 0.758 0.030 0.880 1.136 0.342 −0.035 to 0.718 0.075 0.880 1.136
Not borrowing money (vs yes) 0.420 0.085 to 0.754 0.014 0.821 1.218 0.271 −0.079 to 0.621 0.128 0.821 1.218
R2 0.290 0.197
R2adj 0.233 0.133

VAS, Visual Analogue Scale.