Survival among people hospitalized with COVID-19 in Switzerland: a nationwide population-based analysis

Table 1 Characteristics and mortality of patients hospitalized with a positive SARS-CoV-2 test during the first and second epidemic wave in Switzerland

	First epidemic wave February 24 to June 5, 2020			Second epidemic wave June 6, 2020, to March 1, 2021
	No. of patients	Deaths	%	No. of patients	Deaths	%
Total	3696	897	24.3%	18,952	3888	20.5%
Sex
Female	1456	292	20.1%	8099	1381	17.1%
Male	2240	605	27.0%	10,853	2507	23.1%
Age [years]
Median (IQR)	73 (59–82)	81 (74–87)		75 (63–83)	82 (75–87)
0–29	137	1	0.7%	517	3	0.6%
30–39	122	4	3.3%	399	4	1.0%
40–49	202	4	2.0%	874	22	2.5%
50–59	505	31	6.1%	2009	98	4.9%
60–69	624	94	15.1%	3274	382	11.7%
70–79	920	252	27.4%	4976	1107	22.2%
80–89	906	371	40.9%	5360	1666	31.1%
90+	280	140	50.0%	1543	606	39.3%
Comorbid conditions
Presence of any condition
No comorbid condition	495	19	3.8%	2288	88	3.8%
Any comorbid condition	3201	878	27.4%	16,664	3800	22.8%
Number of conditions
0	495	19	3.8%	2288	88	3.8%
1	1184	149	12.6%	5253	569	10.8%
2	1006	254	25.2%	4809	901	18.7%
3+	1011	475	47.0%	6602	2330	35.3%
Presence of specific condition
Cancer	382	182	47.6%	2203	795	36.1%
Cardiovascular disease	1244	534	42.9%	8057	2561	31.8%
Chronic kidney disease	90	61	67.8%	3803	1437	37.8%
Chronic respiratory disease	578	209	36.2%	3135	960	30.6%
Diabetes	844	258	30.6%	4875	1274	26.1%
Hypertension	1921	602	31.3%	9781	2551	26.1%
Immunosuppression	153	63	41.2%	1036	322	31.1%
Obesity	16	8	50.0%	1844	430	23.3%
Other	1500	481	32.1%	4657	1254	26.9%
ICU occupancy
Total ICU occupancy
≤ 65.7%^a	-	-		1903	327	17.2%
65.8–72.8%^a	-	-		7622	1521	20.0%
72.9–76.9%^a	-	-		7537	1609	21.3%
> 76.9%^a	-	-		1890	431	22.8%

^a65.7, 72.8, and 76.9% correspond to the 10%, 50%, and 90% percentiles of the ICU occupancy distribution in the second epidemic wave. Abbreviations: ICU intensive care unit. Figures correspond to counts (percentage) or median (interquartile range)

ISSN: 1741-7015