Table 1.

Published risk factors for COVID-19 hospitalization in Mexico, before SARS-CoV-2 vaccination, ranked in decreasing order (with data up to January 2021).

Risk Factor for Hospitalization	Odds Ratio (95% CI)	Reference
Detected pneumonia	33 (29–38)	[13]
CKD + DM	6.6 (2.4–18.3)	[14]
CKD + HT	4.3 (2.0–9.3)	[14]
Age ≥ 75	3.8 (2.9–5.1)	[13]
IS + Ob	4.2 (1.8–9.8)	[15]
	3.7 (1.6–8.8)
CKD	3.5 (2.6–4.6)	[14]
	2.4 (1.4–4.3)	[13,15,16]
IS	2.9 (1.9–4.6)	[15]
	2.4 (1.9–3.2)	[16]
Age ≥ 65	2.8 (2.7–2.9)	[17]
DM + Ob	2.7 (2.1–3.5)	[14,15]
	1.7 (1.2–2.6)	[13]
DM	2.6 (2.2–3.0)	[14,15]
	2.0 (1.9–2.01)	[13,16,17]
DM + HT	2.5 (2.0–3.0)	[13,14]
Ob + COPD	2.5 (1.1–6.2)	[14]
Age ≥ 50–74	2.0 (1.8–2.3)	[13]
DM and age < 40	2.0 (1.8–2.2)	[17]
Ob + HT	1.9 (1.5–2.3)	[13,14,15]
Ob	1.9 (1.7–2.1)	[15]
	1.6 (1.3–1.9)	[13,14]
	1.4 (1.2–1.6)	[16,17]
COPD	1.9 (1.5–2.4)	[14]
	1.7 (1.2–2.5)	[13,17]
DM + HT+ Ob	1.8 (1.3–2.5)	[13]
Male	1.7 (1.5–1.8)	[17]
	1.5 (1.4–1.7)	[13]
HT	1.5 (1.3–1.9)	[13,14]
	1.3 (1.2–1.6)	[15,16]

CKD = chronic kidney disease; DM = diabetes mellitus; HT = systemic hypertension; Ob = obesity; IS = immune suppression; COPD = chronic obstructive pulmonary disease; CVD = cardiovascular disease. The OR (odds ratio) values of more than one publication are listed together when they were within the 95% CI (confidence interval). Calculations included cases at all ages.