Heat Related Deaths Summary Tables

Table 1. Heat-related deaths, 2000-2019 (Age-adjusted Rates)

Year of Death	Age-adjusted Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
2000	0.14	0.10	0.18	43
2001	0.07	0.04	0.10	22
2002	0.11	0.08	0.15	37
2003	0.14	0.10	0.18	48
2004	0.12	0.09	0.17	43
2005	0.19	0.15	0.24	67
2006	0.59	0.51	0.68	204
2007	0.20	0.15	0.25	71
2008	0.13	0.10	0.17	48
2009	0.16	0.12	0.20	59
2010	0.10	0.07	0.14	40
2011	0.08	0.05	0.11	29
2012	0.15	0.12	0.20	59
2013	0.17	0.13	0.21	66
2014	0.12	0.09	0.16	47
2015	0.13	0.09	0.16	52
2016	0.16	0.12	0.20	66
2017	0.23	0.18	0.28	98
2018	0.22	0.18	0.27	93
2019	0.12	0.08	0.15	49
Total	0.17	0.16	0.18	1241

Race	Age-adjusted Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
White	0.18	0.16	0.19	669
Black	0.28	0.23	0.34	119
Asian/PI	0.06	0.05	0.08	58
Hispanic	0.17	0.15	0.19	380
Total	0.17	0.16	0.18	1241

Sex	Age-adjusted Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
Male	0.24	0.23	0.26	862
Female	0.09	0.09	0.11	379
Total	0.17	0.16	0.18	1241

Age	Age-adjusted Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
0-4 years	0.08	0.05	0.11	39
5-17 years	0.02	0.01	0.02	21
18-34 years	0.11	0.1	0.13	207
35-64 years	0.2	0.18	0.22	586
65 and over	0.44	0.39	0.48	388
Total	0.17	0.16	0.18	1241

Year of Death	Crude Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
2000	0.13	0.09	0.17	43
2001	0.06	0.04	0.10	22
2002	0.11	0.07	0.15	37
2003	0.14	0.10	0.18	48
2004	0.12	0.09	0.16	43
2005	0.19	0.14	0.24	67
2006	0.56	0.49	0.65	204
2007	0.19	0.15	0.25	71
2008	0.13	0.10	0.17	48
2009	0.16	0.12	0.21	59
2010	0.11	0.08	0.15	40
2011	0.08	0.05	0.11	29
2012	0.16	0.12	0.20	59
2013	0.17	0.13	0.22	66
2014	0.12	0.09	0.16	47
2015	0.13	0.10	0.18	52
2016	0.17	0.13	0.21	66
2017	0.25	0.20	0.30	98
2018	0.23	0.19	0.28	93
2019	0.12	0.09	0.16	49
Total	0.17	0.16	0.18	1241

Race	Crude Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
White	0.22	0.20	0.23	669
Black	0.27	0.22	0.32	119
Asian/PI	0.06	0.05	0.08	58
Hispanic	0.14	0.12	0.15	380
Total	0.17	0.16	0.18	1241

Sex	Crude Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
Male	0.23	0.22	0.25	862
Female	0.10	0.09	0.11	379
Total	0.17	0.16	0.18	1241

Age	Crude Rate (per 100,000)	Lower 95% Limit	Upper 95% Limit	Number of deaths
0-4 years	0.08	0.05	0.11	39
5-17 years	0.02	0.01	0.02	21
18-34 years	0.11	0.10	0.13	207
35-64 years	0.21	0.19	0.22	586
65 and over	0.43	0.39	0.48	388
Total	0.17	0.16	0.18	1241

Mortality due to Heat-related illness represents California residents who died due to excessive heat exposure; expressed as a rate per 100,000 California residents. Deaths without a known county of residence are included.
Heat-related deaths were identified for the months of May-September, from 2000 to 2019, using ICD-10 codes for the following as the main or contributing causes of death: heat stroke and sun stroke (T67.0); heat syncope (T67.1); heat cramps (T64.2); heat exhaustion from water depletion(T67.3); heat exhaustion from salt depletion (T67.4); heat exhaustion, unspecified (T67.5); heat fatigue, transient (T67.6); heat edema (T67.7); other specified heat effects (T67.8); unspecified effects of heat and light (T67.9); exposure to excessive natural heat (X30); and exposure to sunlight (X32). As with the morbidity dataset, deaths due to a man-made source of heat (W92) were excluded.
Data Sources: Multiple Causes of Death Files from the Center for Health Statistics, 2000-2019. Denominators for rates are based on estimates from the California Department of Finance.
The 95% Confidence Interval (CI) is the range of values that likely contains the true heat-related event rate per 100,000 in the population.
Data are not available if the number of events is less than 12.