TABLE 2.
Factors | Univariate analysis unadjusted odds ratio (95% CI) | P-value | Multivariate analysis adjusted odds ratio (95% CI) | P-value |
Specialty | <0.001 | <0.001 | ||
Primary care physicians | Reference | Reference | ||
Colorectal surgeons | 20.05 (4.30–93.45) | 13.18 (2.56–67.86) | ||
Gastroenterologists | 11.28 (4.96–25.65) | 7.72 (3.08–19.39) | ||
Resident physicians | 3.14 (1.69–5.56) | 2.22 (1.02–4.84) | ||
General surgeons | 2.62 (1.37–5.01) | 2.09 (0.97–4.50) | ||
Years of practice | 0.056 | 0.787 | ||
<10 years | Reference | Reference | ||
15–20 years | 1.64 (1.07–2.52) | 1.09 (0.65–1.86) | ||
>20 years | 1.34 (0.88–2.03) | 0.88 (0.50–1.54) | ||
Number of patients seen per week | 0.084 | 0.296 | ||
<20 patients/week | Reference | Reference | ||
21–50 patients/week | 1.34 (0.68–2.64) | 1.58 (0.77–3.24) | ||
51–100 patients/week | 0.92 (0.47–1.80) | 1.03 (0.49–2.15) | ||
>100 patients/weeks | 0.78 (0.39–1.53) | 1.26 (0.58–2.45) | ||
Type of hospital | 0.008 | 0.010 | ||
Primary/private clinics | Reference | Reference | ||
Private hospitals | 6.67 (3.37–13.18) | 4.43 (1.99–9.86) | ||
Academic centers | 3.67 (2.09–6.45) | 1.93 (0.92–4.06) | ||
Tertiary care centers | 2.23 (1.27–3.94) | 1.80 (0.93–3.46) | ||
Geographic distribution | 0.600 | 0.764 | ||
North | Reference | Reference | ||
Northeast | 0.84 (0.43–1.61) | 1.34 (0.64–2.79) | ||
East | 1.29 (0.50–3.32) | 1.04 (0.37–2.94) | ||
Center | 1.67 (1.04–2.69) | 1.36 (0.79–2.33) | ||
South | 0.83 (0.48–1.45) | 1.06 (0.57–1.96) |
Parameters included for multivariate analysis model: physicians’ specialty, years of practice, number of patients seen per week, type of hospital and geographic distribution.