The burden of hospitalisations for COVID-19 in France: a study of all cases in the national insurance claims database in 2020

Figures & data

Figure 1. Distribution of patients and stays by wave and intensity of hospitalisation.

Note: AP: acute phase; COVID: coronavirus disease.

Table 1. Patient characteristics by level of respiratory support.

	Level 1 (N = 183,142)	Level 2 (N = 3,420)	Level 3 (N = 17,824)	TOTAL (N = 199,455)
Gender
Women (n, %)	86,858 (47.4%)	1,171 (34.2%)	4,957 (27.8%)	91,604 (45.9%)
Age (years)
Mean ± SD	66.7 ± 20.2	68.7 ± 14.0	65.1 ± 12.1	65.7 ± 19.8
Median [IQR]	70 [54 – 83]	70 [60 – 79]	67 [58 –73]	69 [53 – 82]
Risk factors
Any risk factor	117,267 (64.0%)	3,225 (94.3%)	15,815 (88.7%)	131,740 (66.0%)
Immunosuppressed status	721 (0.4%)	10 (0.3%)	125 (0.7%)	838 (0.4%)
Other medical risk factors	116,055 (63.4%)	3,158 (92.3%)	16,140 (90.6%)	122,858 (61.6%)
Age >80 (years)	60,703 (33.1%)	843 (24.6%)	1,599 (9.0%)	62,702 (31.4%)

SD: standard deviation; IQR: interquartile range.

Figure 2. Length of stay.

Note: Data are presented as box plots. The filled symbols represent the mean value, the horizontal line the median value and the boxes the upper and lower limits of the interquartile range.

Table 2. Discharge and in-hospital mortality.

	Level 1 (N = 183,142)	Level 2 (N = 3,420)	Level 3 (N = 17,824)	TOTAL (N = 199,455)
Discharge to home	128,121 (70.0%)	1,620 (47.4%)	4,620 (25.9%)	134,133 (67.2%)
Transfer to another hospital	32,265 (17.6%)	882 (25.8%)	6,935 (38.9%)	38,277 (19.2%)
Transfer to another unit within the hospital	9,777 (5.3%)	81 (2.4%)	719 (4.0%)	10,573 (5.3%)
Died in hospital	25,277 (13.8%)	852 (24.9%)	6,474 (36.3%)	32,602 (16.3%)
	N = 69,897	N = 562	N = 5,823	N = 76,282
Rehospitalisations	8,342 (11.9%)	78 (13.9%)	1,901 (32.7%)	10,321 (13.5%)

Figure 3. Mortality rates.

Note: white columns: acute-phase COVID-19 (AP); light-grey columns: AP with risk factors; dark grey colummns: prolonged COVID-19 (PC);black columns: PC with risk factors.

Table 3. Per patient costs of hospitalisation in the overall population.

Intensity of care	Number of stays	Median cost [IQR] [Min – Max]	Mean cost ± SD
Level 1	215,292	3,830 [679 – 4,942, [0–90,673]	3,989 ± 3,061
Level 2	3,448	10,143 5,235 – [4], 207] [0–59,582]	10,577 ± 5,534
Level 3	19,842	17,574 [5], 924–26,454] [0–219,661]	21,133 ± 15,343
Age
≤50 years	51,720	679 [679 – [3], 830] [0–147,510]	3,005 ± 5,192
51–60 years	34,547	3,830 [679 – [6], 942] [0–216,661]	5,518 ± 8,164
61–80 years	86,621	5,241 [3], 290 – [7;] 888] [0–210,639]	7,171 ± 9,118
>80 years	65,694	5,942 [3], 830 – [6], 942] [0–73.161]	5,288 ± 3,280
TOTAL	238,582	3,830 [747 – [6], 942] [0–219,661]	5,510 ± 7,142

Table 4. Mean per capita costs of hospitalisation in analysis subpopulations.

	AP	AP + RF	PC	PC+ RF
Intensity of care
Level 1	4,019 ± 2,812	4,670 ± 2,277	6,380 ± 8,727	7,459 ± 9,596
Level 2	9,952 ± 4,636	10,090 ± 4,587	15,095 ± 13,422	12,682 ± 12,840
Level 3	14,896 ± 7,074	14,997 ± 7,001	36,628 ± 23,991	33,917 ± 25,116
Age
≤50 years	2,837 ± 3,557	6,276 ± 4,864	7,381 ± 15,009	18,109 ± 22,609
51–60 years	4,556 ± 4,615	6,684 ± 5,235	15,569 ± 21,222	21,247 ± 23,198
61–80 years	5,651 ± 4,925	6,659 ± 5,196	19,264 ± 23,117	21,386 ± 23,963
>80 years	5,095 ± 2,769	5,095 ± 2,769	7,317 ± 6,970	7,317 ± 6,970
TOTAL	4,753 ± 4,200	5,954 ± 4,355	13,648 ± 19,598	16,915 ± 21,069

AP: acute phase COVID-19; AP + RF: acute phase COVID-19 with risk factors; PC: prolonged COVID-19 hospitalisation; PC + RF: prolonged COVID-19 hospitalisation with risk factors.

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Data availability statement

The source database belongs to a third party, the ATIH (Agence Technique de l’Information sur l’Hospitalisation). Data are available exclusively from the ATIH to institutions who meet the criteria for access to confidential data, following procurement of consent from the French data protection authority (CNIL). Publication of individual patient data is not permitted. The ATIH, which is responsible for access to PMSI data in France, is a one-stop-shop window for access to the PMSI database. The contact address for the ATIH is 117 Bd Marius Vivier Merle, 69003 Lyon Telephone: [phone]; Email: [email protected]; Website: https://www.indsante.fr/fr.