Table 2.

Influence of baseline parameters on the probability of hospitalization and need of supplementary oxygen.

	Risk of hospitalization				Risk of oxygen need
	Univariate analysis		Multivariate analysis		Univariate analysis		Multivariate analysis
Parameters	OR (95 % CI)	p	OR (95 % CI)	p	OR (95 % CI)	p	OR (95 % CI)	p
Age at diagnosis	1.06 (1.00−1.11)	0.01			1.12 (1.03−1.21)	0.003
Gender	4.27 (1.08−16.8)	0.03			1.58 (0.37−6.64)	0.53
Use of steroids	6.94 (1.13−42.3)	0.03			14.5 (2.18−96.43)	0.005
Immunosuppressants*	3.2 (0.60−16.9)	0.17			2.89 (0.52−16.0)	0.22
Biologic therapy	0.63 (0.15−2.53)	0.51			0.52 (0.11−2.33)	0.39
Comorbidities§	20.0 (3.76−106.1)	0.0004	13.8 (2.23−85.1)	0.004	60.7 (5.98−616.6)	0.0005	60.7 (5.98−616.6)	0.0005
IMID diagnosis IBD**	0.23 (0.05−0.95)	0.04			0.15 (0.02−0.87)	0.03
Psoriasis	2.3 (0.47−11.0)	0.29			1.04 (0.17−6.22)	0.96
Rheumatological diseases§§	2.62 (0.65−10.58)	0.17			6.25 (1.32−29.3)	0.02

^*Immunosuppressants: Azathioprine or Methotrexate.

^**IBD, inflammatory bowel disease.

^§comorbidities included arterial hypertension, diabetes, obesity, metabolic syndrome, chronic lung disease, renal cancer and prostate cancer.

^§§rheumatological diseases included psoriatic arthritis, rheumatoid arthritis, ankylosing spondylitis, systemic sclerosis and systemic lupus erythematosus.