Table 4.

Multivariable analysis of potential predictors of adherence

Covariate	OR estimate	Lower 95% CI	Upper 95% CI	P-value
Male (vs female)	1.203	1.085	1.335	0.0005
Age group, years (vs 18–34)
35–44	1.220	1.081	1.376	0.0013
45–54	1.331	1.178	1.505	<0.0001
55–64	1.321	1.138	1.533	0.0003
Select comorbidities (vs none)
Anxiety	1.047	0.917	1.195	0.4995
Arthritis (RA/OA)	0.909	0.770	1.073	0.2586
Depression	0.618	0.511	0.747	<0.0001
Diabetes	0.906	0.767	1.072	0.2505
Gastrointestinal disease	0.893	0.795	1.003	0.0572
Hypertension	0.939	0.841	1.049	0.2661
Thyroid disease	0.947	0.838	1.069	0.3781
Self-injectable DMD (vs oral DMD)	1.062	0.937	1.202	0.3473

Abbreviations: CI, confidence interval; DMD, disease-modifying drug; OA, osteoarthritis; OR, odds ratio; RA, rheumatoid arthritis.