Table 3.

ED Visits and Primary Care Visits at 12-Months

Group	No.	Counts	Person-Years (py)	Rate per 100 py	RD per 100 py	Unadjusted RR	Unadjusted RD %	Adjusted RR (95% CI)	Adjusted RD %
ED visits
Control	164	237	163	146.0	[ref]	1.00	[ref]	1.00	[ref]
CHW	104	91	100	91.3	54.7	0.63(0.49,0.80)	37	1.04(0.69,1.57)	4
Primary Care visits
Control	164	495	163	304.4	[ref]	1.00	[ref]	1.00	[ref]
CHW	104	416	100	417.4	113	1.37(1.20,1.56)	37	1.71(1.25,2.33)	71

Abbreviations: CHW, community health worker; CI, confidence interval; RD, rate difference; RR, rate ratio.

Adjusted for age, sex, and baseline characteristics (doctor location, risk level, health beliefs, pre-baseline utilization, and the interaction of pre-baseline utilization with treatment group) with over-dispersion parameter and control for the effect of clustering in villages and households. The natural log of person-years at risk was included as an offset in the model. The coefficient of interaction term for pre-baseline ED visits with treatment group is −0.2126 (p=0.0179) and coefficient for interaction term of pre-baseline primary visits with treatment group is −0.0520 (p=0.0670).