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. 2021 Nov 5;3(12):e855–e864. doi: 10.1016/S2665-9913(21)00316-7

Table 3.

Multivariable logistic regression analysis of factors associated with ordinal COVID-19 severity outcomes in patients with primary systemic vasculitis or polymyalgia rheumatica

Odds ratio (95% CI)* p value
Age, per decade of life 1·44 (1·31–1·57) <0·001
Sex
Female 1·00 (ref) ..
Male 1·38 (1·05–1·80) 0·020
Time period
June 15, 2020, or before 1·00 (ref) ..
June 16, 2020, to Sept 30, 2020 0·80 (0·54–1·19) 0·27
Oct 1, 2020, to April 12, 2021 0·39 (0·30–0·51) <0·001
Number of comorbidities 1·39 (1·23–1·58) <0·001
Smoking status
Never smoker 1·00 (ref) ..
Ever smoker 1·01 (0·70–1·46) 0·95
Body-mass index, mg/kg2
<30 1·00 (ref) ..
≥30 1·07 (0·78–1·46) 0·16
Glucocorticoid (prednisolone equivalent) use, mg/day
0 1·00 (ref) ..
1–5 1·14 (0·83–1·57) 0·41
6–9 1·22 (0·75–1·97) 0·43
≥10 2·14 (1·50–3·04) <0·001
Disease activity
Remission or low 1·00 (ref) ..
Moderate, or high or severe 2·12 (1·49–3·02) <0·001

This analysis excludes 182 patients with missing outcome data.

*

Adjusted for age, sex, time period, number of comorbidities, smoking status, obesity, glucocorticoid use, disease activity, region, and medication category.