Table 4: Multinomial regression results showing the effect of neighbourhood variables on the relative risk of being a surgeon cluster versus a gastroenterologist cluster
Variable
RR (95% CI)
Rural
98.95 (15.3-427.2)
Socioeconomic quartile
1
Reference
2
2.39 (1.32-3.99)
3
0.94 (0.51-1.57)
4
0.35 (0.18-0.61)
Distance, every 50 km
1.37 (1.10-1.77)
Note: CI = confidence interval, RR = relative risk.