Table 2. Prevalence of Opioid-Related Hospitalizations Among Adults Aged 18 or Older, by Chronic Disease, National Inpatient Sample, 2011–2015^a .

Chronic Disease	Year					P Valueb
	2011	2012	2013	2014	2015
Cancer	1.11c	1.16c	1.32	1.40c	1.58c	<.001
Stroke	0.90c	0.93c	1.04c	1.04c	1.07c	<.001
Obesity	8.18c	8.92c	9.67c	10.21c	10.80	<.001
Asthma	10.77c	11.18c	10.93c	11.49c	11.91c	<.001
Liver Disease	4.76c	4.77c	5.12c	5.21c	5.35c	<.001
Spinal Disease	0.83	0.75d	0.77	0.77	0.80c	.09
Arthritis	1.65	1.67	1.73	1.83d	1.96c	<.001

^a Data are percentages, per 100,000 hospitalizations; sampling weight adjusted in all statistics.

^b Trend analysis was calculated by using χ² test.

^c P < .001. P values calculated by using test.

^d P < .05. P values calculated by using test.