Table 4. Factors associated with the general prevalence of bacterial superinfections in hospitalized patients for COVID-19.

Variable	Levels	n Negative	% Positive (n)	Prevalence ratio (IC95%)
Age group (in years)	<60	132	43.1(100)
	≥60	69	58.7(98)	1.36 (1.12–1.65)**
Chronic lung disease	No	187	47.5(169)
	Yes	14	67.4(29)	1.42 (1.12–1.80)*
Immunosuppression	No	197	48.4(185)
	Yes	4	76.5(13)	1.58 (1.19–2.09)*
Renal failure without renal replacement therapy	No	181	47.1(161)
	Yes	20	64.9(37)	1.38 (1.10–1.72)*
Renal failure with renal replacement therapy	No	200	46.4(173)
	Yes	1	96.2(25)	2.07 (1.81–2.37)**
Encephalopathy	No	196	45.7(165)
	Yes	5	86.8 (33)	1.90 (1.61–2.25)**
Polyneuropathy in critically ill patient	No	194	47.0(172)
	Yes	7	78.8(26)	1.67 (1.36–2.06)**
Myocardial dysfunction and arrhythmias	No	192	48.0(177)
	Yes	9	70.0(21)	1.46 (1.13–1.89)*
Hospital stay (days)	1–7	138	34.6(73)
	≥8	63	66.5(125)	1.92 (1.56–2.37)**
ICU stay	No	175	38.4(109)
	Yes	26	77.4(89)	2.01 (1.69–2.41)**
Mechanical ventilation	No	182	37.9(111)
	Yes	19	82.1(87)	2.17 (1.82–2.57)**
Use of steroids	No	72	25.0(24)
	Yes	129	57.4(174)	2.30 (1.66–3.29)**
Patient’s discharge condition	Alive	193	45.9(164)
	Dead	8	81.0(34)	1.76 (1.46–2.12)**

*p<0.05.

**p<0.01. IC95%: 95% confidence interval.