Application of Zero-Inflated Poisson Mixed Models in Prognostic Factors of Hepatitis C

Table 4

The results of mixed ZIP model.

Parameter	Category	Estimated	Standard error	𝑃-value
Intercept		3.6517	0.1659	<0.001
Age		0.0046	0.0023	0.037
Sex	Female*
	Male	−0.978	0.0833	<0.001
Risk factor	No
	Yes	0.4626	0.074	<0.001
Genotype	1*
	2	−0.8006	0.2381	<0.001
	3	−1.148	0.0932	<0.001
Treatment	Interferon plus Ribavirin*
	Peg-Interferon plus Ribavirin	−0.6628	0.0737	<0.001
𝜆		0.6891
𝜏^2		1.6153
𝜌		0.3634

∗Reference group.