. 2021 Feb 8;23(2):e23400. doi: 10.2196/23400

Table 5.

Results of the binary logistic regression analysis of significant behavioral factors.

Demographic characteristics		Disagree with taking steps to reduce the risk of contracting COVID-19				Cohabitants disagree with taking steps to reduce the risk of contracting COVID-19				Rarely wears a mask
		OR (95% CI)		P value		OR (95% CI)		P value		OR (95% CI)		P value
Opinion of infection		1.00 (0.99-1.00)		.22		1.01 (1.01-1.01)^a		<.001		0.99 (0.99-1.00)^a		<.001
Gender
	Female		0.60 (0.49-0.74)^a		<.001		1.30 (1.12-1.51)^c		.001		0.75 (0.71-0.79)^a		<.001
	Male		1.0 (Referent)		N/A^b		1.0 (Referent)		N/A		1.0 (Referent)		N/A
Number of COVID-19 cases in a participant’s state of current residence
	0-1000		1.76 (0.83-3.75)		.14		1.20 (0.71-2.05)		.495		1.59 (1.30-1.95)^a		<.001
	1001-5000		1.32 (0.76-2.29)		.33		0.95 (0.66-1.36)		.76		1.98 (1.73-2.25)^a		<.001
	5001-10,000		1.34 (0.76-2.37)		.32		0.82 (0.56-1.20)		.30		1.80 (1.57-2.06)^a		<.001
	10,001-20,000		1.15 (0.66-1.99)		.62		0.99 (0.69-1.41)		.95		1.62 (1.43-1.84)^a		<.001
	20,001-40,000		1.19 (0.69-2.06)		.53		0.87 (0.61-1.24)		.43		1.31 (1.15-1.49)^a		<.001
	≥40,001		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
Age (years)
	0-20		2.96 (2.27-3.88)^a		<.001		2.04 (1.68-2.47)^a		<.001		1.48 (1.36-1.60)^a		<.001
	20-40		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
	40 to 60 years		0.52 (0.35-0.76)^c		.001		0.46 (0.35-0.59)^a		<.001		0.68 (0.63-0.73)^a		<.001
	More than 60 years		0.69 (0.47-1.01)		.06		0.56 (0.43-0.72)^a		<.001		0.42 (0.39-0.46)^a		<.001
BMI^d
	Underweight (BMI<18.5 kg/m²)		1.10 (0.68-1.76)		.70		1.17 (0.81-1.67)		.41		1.07 (0.89-1.29)		.47
	Normal weight (BMI=18.5-24.9 kg/m²)		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
	Preobesity (BMI=25-29.9 kg/m²)		0.71 (0.54-0.93)^e		.014		0.73 (0.59-0.89)^c		.002		1.06 (0.99-1.13)		.12
	Obesity (BMI≥30 kg/m²)		1.03 (0.81-1.31)		.81		0.88 (0.73-1.04)		.13		1.14 (1.06-1.21)^a		<.001
Smoking status
	Never		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
	Quit		1.31 (0.96-1.78)		.09		1.18 (0.95-1.46)		.14		0.97 (0.91-1.04)		.42
	Vape		1.69 (1.25-2.30)^c		.001		0.94 (0.73-1.22)		.65		1.03 (0.93-1.14)		.54
	Yes		2.22 (1.65-2.99)^a		<.001		1.57 (1.25-1.96)^a		<.001		1.11 (1.02-1.21)^c		.019
Alcohol consumption status
	Never		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
	None in last 14days		1.12 (0.83-1.52)		.47		0.98 (0.80-1.21)		.88		1.17 (1.08-1.27)^a		<.001
	Some in last 14 days		1.31 (0.99-1.73)		.056		0.82 (0.67-1.00)^e		.047		1.18 (1.10-1.27)^a		<.001
Nonprescription/recreational drug use status
	Never		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A
	None in last 28 days		1.03 (0.78-1.36)		.87		1.15 (0.94, 1.41)		.16		0.98 (0.91-1.04)		.46
	Some in last 28 days		1.30 (0.99-1.71)		.06		1.47 (1.20-1.81)^a		<.001		0.82 (0.76-0.89)^a		<.001
Underlying medical conditions
	Have		0.89 (0.71-1.12)		.32		1.31 (1.12-1.53)^c		.001		0.84 (0.80-0.89)^a		<.001
	None		1.0 (Referent)		N/A		1.0 (Referent)		N/A		1.0 (Referent)		N/A

^aSignificant at a level of P<.001.

^bN/A: not appliable.

^c Significant at a level of P<.01.

^dBMI: body mass index.

^eSignificant at a level of P<.05.