Table 8

Comparisons of adverse events at 84-month interval.

Variable	P₁ (Investigational)		P₀ (Control)		P₁ – P₀		Probability of Superiority
	Mean	95% HPD	Mean	95% HPD	Mean	95% HPD
Anatomical/technical difficulty	0.006	(0.0003, 0.019)	0.000	(0.000, 0.000)	0.006	(0.0003, 0.019)	0.003
Cancer	0.023	(0.008, 0.044)	0.014	(0.004, 0.032)	0.009	(-0.015, 0.033)	0.224
Cardiac disorders	0.127	(0.090, 0.170)	0.148	(0.106, 0.196)	-0.021	(-0.084, 0.041)	0.749
Dysphagia/dysphonia	0.109	(0.075, 0.150)	0.098	(0.064, 0.139)	0.011	(-0.046, 0.066)	0.351
Gastrointestinal	0.228	(0.179, 0.281)	0.241	(0.189, 0.298)	-0.013	(-0.092, 0.064)	0.632
Heterotopic ossification	0.163	(0.121, 0.210)	0.122	(0.084, 0.166)	0.041	(-0.022, 0.105)	0.104
Implant events	0.074	(0.045, 0.110)	0.031	(0.014, 0.055)	0.044	(0.005, 0.085)	0.014
Infection	0.219	(0.171, 0.272)	0.183	(0.137, 0.234)	0.037	(-0.037, 0.109)	0.163
Neck and/or arm pain	0.658	(0.598, 0.715)	0.597	(0.536, 0.657)	0.061	(-0.027, 0.148)	0.086
Neurological	0.527	(0.466, 0.587)	0.542	(0.478, 0.605)	-0.015	(-0.108, 0.077)	0.624
Non-union	0.007	(0.001, 0.020)	0.133	(0.092, 0.181)	-0.126	(-0.174, -0.083)	∼1.000
Other	0.498	(0.436, 0.560)	0.474	(0.412, 0.537)	0.025	(-0.067, 0.117)	0.300
Other pain	0.636	(0.575, 0.693)	0.643	(0.581, 0.702)	-0.007	(-0.096, 0.083)	0.552
Respiratory	0.155	(0.113, 0.202)	0.125	(0.088, 0.169)	0.030	(-0.034, 0.093)	0.176
Spinal event	0.463	(0.404, 0.525)	0.389	(0.327, 0.451)	0.074	(-0.015, 0.167)	0.053
Trauma	0.370	(0.313, 0.430)	0.305	(0.249, 0.364)	0.065	(-0.020, 0.151)	0.067
Urogenital	0.173	(0.129, 0.223)	0.102	(0.067, 0.143)	0.071	(0.007, 0.134)	0.016
Vascular	0.084	(0.053, 0.121)	0.030	(0.013, 0.056)	0.054	(0.014, 0.096)	0.005
Wound (non-infection)	0.089	(0.057, 0.127)	0.056	(0.032, 0.088)	0.032	(-0.013, 0.079)	0.086
Any adverse event	0.968	(0.943, 0.985)	0.877	(0.832, 0.917)	0.090	(0.044, 0.141)	0.000

HPD = highest posterior density.