Analysis of Blood Transfusion Data Using Bivariate Zero-Inflated Poisson Model: A Bayesian Approach

Table 2

Posterior summaries for the parameters of bivariate zero-inflated Poisson regression model.

Parameter
	Mean	Median	Standard deviation	2.5 percentile	97.5 percentile	Mean	Median	Standard deviation	2.5 percentile	97.5 percentile
Beta 0 (constant)	−0.0143	−0.011	0.250	−0.515	0.460	−0.780	−0.773	0.403	−1.6	0.005
Beta (age − mean (age))	−0.004	−0.004	0.004	−0.012	0.004	0.0041	0.0042	0.01	−0.015	0.023
Beta (sex)	0.43	0.421	0.28	−0.01	0.99	−0.414	−0.429	0.5	−1.314	0.601
Beta (weight − mean (weight))	0.0161	0.0161	0.0027	0.011	0.0213	0.0158	0.0159	0.0064	0.0032	0.0284
Beta (marital status)	0.03	0.03	0.088	−0.141	0.202	0.176	0.177	0.21	−0.239	0.59
Education
Beta (high school versus elementary)	0.0963	0.0964	0.11	−0.111	0.304	0.358	0.357	0.271	−0.171	0.892
Beta (diploma versus elementary)	−0.07	−0.07	0.11	−0.28	0.148	0.39	0.39	0.271	−0.127	0.93
Beta (university versus elementary)	−0.25	−0.25	0.13	−0.5	0.002	0.241	0.238	0.33	−0.41	0.9
Job
Beta (clerical versus housekeeper)	0.57	0.57	0.336	−0.1	1.23	−0.707	−0.702	0.575	−1.9	0.396
Beta (worker versus housekeeper)	0.533	0.532	0.332	−0.12	1.2	−0.462	−0.455	0.566	−1.6	0.63
Beta (free job versus housekeeper)	0.35	0.35	0.33	−0.3	1.01	−0.3	−0.259	0.553	−1.4	0.77
Beta (student versus housekeeper)	0.81	0.812	0.34	0.15	1.5	−0.48	−0.473	0.6	−1.67	0.65
	0.428	0.429	0.020	0.391	0.466
	2.075E − 4	2.206E − 11	0.0012	2.596E − 32	0.0023
Deviance	3827	3826	7.063	3815	3844