Table 5. Factors affecting the frequency of use of POCUS.

Variables			Effect	OR (95% CI)	P-value
Multinomial logistic regression: univariate analysis (n = 423)
	No. of US devices (n = 423)		Every day vs. once a montha	1.839 (1.253–2.699)	< 0.001
			Once a weekb vs. once a montha	1.404 (0.949–2.078)	0.105
	Education (n = 392)		Every day vs. once a montha	2.679 (1.213–5.920)	0.011
			Once a weekb vs. once a montha	2.458 (1.086–5.562)	0.027
	Presence of POCUS training faculty (n = 389)		Every day vs. once a montha	2.452 (0.954–6.303)	0.067
			Once a weekb vs. once a montha	1.676 (0.633–4.436)	0.468
	Availability of US from other departments (n = 381)
		Always vs. unavailable	Every day vs. once a montha	6.200 (0.331–115.958)	> 0.999
		Always vs. unavailable	Once a weekb vs. once a montha	1.133 (0.090–14.342)	> 0.999
		Daytime on weekday vs. unavailable	Every day vs. once a montha	4.304 (0.287–64.554)	> 0.999
		Daytime on weekday vs. unavailable	Once a weekb vs. once a montha	1.043 (0.111–9.850)	> 0.999
	Total No. of physicians (n = 423)
		11–20 vs. 0–10	Every day vs. once a montha	5.409 (1.922–15.223)	0.005
		11–20 vs. 0–10	Once a weekb vs. once a montha	2.559 (0.950–6.889)	0.074
		21–30 vs. 0–10	Every day vs. once a montha	9.773 (1.969–48.499)	0.001
		21–30 vs. 0–10	Once a weekb vs. once a montha	2.500 (0.483–12.938)	0.848
		Over 31 vs. 0–10	Every day vs. once a montha	14.091 (1.742–113.954)	0.005
		Over 31 vs. 0–10	Once a weekb vs. once a montha	7.059 (0.883–56.459)	0.079
Multinomial logistic regression: multivariable analysis (n = 389)
	No. of US devices (n = 423)		Every day vs. once a montha	1.742 (1.174–3.113)	0.044
			Once a weekb vs. once a montha	1.395 (0.774–2.514)	0.410
	Education (n = 392)		Every day vs. once a montha	2.213 (0.943–5.195)	0.074
			Once a weekb vs. once a montha	2.175 (0.924–5.118)	0.084
	Presence of POCUS training faculty (n = 389)		Every day vs. once a montha	0.932 (0.317–2.741)	> 0.999
			Once a weekb vs. once a montha	0.797 (0.266–2.388)	> 0.999
	Total No. of physicians (n = 423)
		11–20 vs. 0–10	Every day vs. once a montha	4.624 (1.482–14.427)	0.002
		11–20 vs. 0–10	Once a weekb vs. once a montha	2.747 (0.913–8.263)	0.093
		21–30 vs. 0–10	Every day vs. once a montha	4.784 (1.333–15.173)	0.025
		21–30 vs. 0–10	Once a weekb vs. once a montha	2.066 (0.261–16.354)	> 0.999
		Over 31 vs. 0–10	Every day vs. once a montha	8.046 (0.375–172.807)	0.437
		Over 31 vs. 0–10	Once a weekb vs. once a montha	8.167 (0.384–173.880)	0.420

The 95% CI and P-values were adjusted values.

^aRespondents who used ultrasound less than once a month were grouped with respondents who used ultrasound at least once a month, and analyzed as once a month; ^bOnce a week indicates at least once a week.

POCUS = point-of-care ultrasound, OR = odds ratio, CI = confidence interval, US = ultrasound.