Additive and multiplicative hazards modeling for recurrent event data analysis

Table 3 Recurrent event time models with varying baseline and order-specific coefficient effects, from the additive and multiplicative hazards models.

Model	Order	Covariate	Estimate	S.E	Chi-square	p-value
Additive Hazards Model	1	Gender ^#	-0.103	0.06	2.96	0.085
		Race/ethnicity ^&	0.068	0.036	3.66	0.056
		Age	0.004	0.005	0.60	0.439
		Parent ^@	0.063	0.034	6.70	0.065
	2	Gender	-0.202	0.067	9.13	0.003
		Race/ethnicity	0.038	0.051	0.55	0.457
		Age	0.015	0.005	7.94	0.005
		Parent	0.028	0.049	0.33	0.567
	3	Gender	-0.181	0.053	11.7	0.001
		Race/ethnicity	0.003	0.078	0.002	0.967
		Age	0.011	0.008	1.92	0.165
		Parent	-0.025	0.046	0.30	0.583
	4	Gender	-0.158	0.013	2.65	0.103
		Race/ethnicity	0.068	0.121	0.32	0.571
		Age	0.021	0.013	2.65	0.104
		Parent	-0.075	0.088	0.73	0.394
---------------------	-------	---------------	------------	------------	-----------	----------
Multiplicative Hazards Model	1	Gender	-0.464	0.179	7.36	0.007
		Race/ethnicity	0.391	0.175	5.05	0.025
		Age	0.021	0.021	1.15	0.285
		Parent	0.347	0.144	5.99	0.014
	2	Gender	-0.864	0.235	15.7	< 0.0001
		Race/ethnicity	0.185	0.262	0.45	0.505
		Age	0.078	0.029	6.33	0.012
		Parent	0.112	0.215	0.31	0.577
	3	Gender	-0.747	0.25	8.21	0.004
		Race/ethnicity	0.085	0.445	0.04	0.842
		Age	0.051	0.047	1.03	0.309
		Parent	-0.138	0.248	0.29	0.589
	4	Gender	-0.732	0.28	5.44	0.02
		Race/ethnicity	0.357	0.469	0.48	0.49
		Age	0.103	0.073	1.71	0.191
		Parent	-0.31	0.323	0.89	0.345

Estimation of regression coefficients, "robust" standard errors (S.E.), chi-square, and p-values.
* guardian ≡ 1 if subject had parents or a single parent as guardian(s), and 0 if otherwise.
^&race/ethnicity ≡ 1 if subject is Black and 0 if otherwise.
^# gender ≡ 1 if subject is male and 0 if otherwise.

ISSN: 1471-2288