Table 1.

Descriptive statistics for mental health emergency department users.

Patient characteristics	Less than 4 visits/year		4 or more visits/year
	N	%	N	%
Total	607975	71.8	238892	28.2
Gender
Male	238463	50.1	22592	61.5
Female	237502	49.9	14129	38.5
Age
21–25	55992	11.8	3916	10.7
26–30	52316	11.0	4922	13.4
31–35	47057	9.9	4700	12.8
36–40	42947	9.0	4123	11.2
41–45	47306	9.9	4493	12.2
46–50	51478	10.8	4815	13.1
51–55	47985	10.1	4277	11.6
56–60	36224	7.6	2752	7.5
61–65	24586	5.2	1512	40.1
66+	70074	14.7	1211	3.3
Payer
Medi-Cal*	116373	24.4	14795	40.3
Medicare	119080	25.0	10971	29.9
Other	106354	22.3	5001	13.6
Private	54571	11.5	1737	4.7
Self pay	79587	16.7	4217	11.5
Homeless	5079	1.1	1074	2.9
Substance use in past 12 months	176147	37.0	28142	76.6

^*Medi-Cal is the Medicaid healthcare program serving low-income people in California.