. Author manuscript; available in PMC: 2020 Oct 1.

Published in final edited form as: Autism. 2019 Feb 28;23(7):1732–1739. doi: 10.1177/1362361319827412

Table 3.

Predictors of mortality for individuals with ASD (Cox proportional hazard models)

Predictors	Model 1		Model 2		Model 3
	HR^a	[95% CI]	HR	[95% CI]	HR	[95% CI]
Age	1.071^***	[1.04, 1.11]	1.066^***	[1.03, 1.10]	1.068^***	[1.03, 1.11]
Sex (female=1)	0.420	[0.14, 1.22]	0.448	[0.15, 1.31]	0.473	[0.16, 1.39]
Intellectual Disability	1.262	[0.46, 3.43]	1.214	[0.44, 3.33]	0.616	[0.19, 2.01]
Health rating (ref. excellent)
Good			2.358	[0.77, 7.23]	2.132	[0.69, 6.60]
Fair/poor ^b			4.661^*	[1.42, 15.28]	4.300^*	[1.28, 14.45]
Number of Behavior problems					0.923	[0.75, 1.14]
ADI-R Lifetime Social					1.275^*	[1.05, 1.55]
ADI-R Lifetime Non-verbal					0.894	[0.68, 1.18]
ADI-R Lifetime Behavior					0.976	[0.82, 1.17]
WADL					0.935^*	[0.88, 0.99]

p < 0.05

^**

p < 0.01

^***

p < 0.001

^a.

HR hazard ratio; CI confidence interval.

^b.

The difference between “Good” and “Fair/poor” was not significant (p = 0.115).