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. 2023 Jan;29(1):118–126. doi: 10.3201/eid2901.221346

Table 1. Characteristics and outcomes for 2,586 persons included in a study of risk for severe COVID-19 outcomes among persons with intellectual disabilities, the Netherlands*.

Characteristics Mild illness, n = 2,326 Severe illness, n = 161 Died, n = 99† Total, n = 2,586
Sex, no. (%), n = 2,525
M 1,315 (58.0) 103 (64.0) 58 (59.2) 1,476 (58.5)
F
951 (42.0)
58 (36.0)
40 (40.8)
1,049 (41.5)
Median age, y (IQR), n = 2,519
49 (32.0–61.0)
61 (52.0–67.5)
68 (61.0–76.0)
51 (34–62)
Age groups, no. (%), n = 2,519
0–17 y 81 (3.6) 0 1 (1.0) 82 (3.3)
18–39 y 721 (31.9) 16 (9.9) 2 (2.0) 739 (29.3)
40–49 y 330 (14.6) 16 (9.9) 4 (4.0) 350 (13.9)
50–59 y 491 (21.7) 44 (27.3) 16 (16.2) 551 (21.9)
60–69 y 399 (17.7) 57 (35.4) 32 (32.3) 488 (19.4)
>70 y
237 (10.5)
28 (17.4)
44 (44.4)
309 (12.3)
Long term care type, no. (%)
Group home 1,853 (79.7) 132 (82.0) 82 (82.8) 2,067 (79.9)
Independent living 349 (15.0) 28 (17.4) 16 (16.2) 393 (15.2)
Other or unknown
124 (5.3)
1 (0.6)
1 (1.0)
126 (4.9)
Disability level, no. (%), n = 2,468
Borderline to mild 632 (28.5) 49 (31.2) 18 (18.9) 699 (28.3)
Moderate 798 (36.0) 47 (29.9) 42 (44.2) 887 (35.9)
Severe to profound
786 (35.5)
61 (38.9)
35 (36.8)
882 (35.7)
Disability etiology, no. (%)
Down syndrome
141 (6.1)
20 (12.4)
15 (15.2)
176 (6.8)
No. concurrent conditions (%)
None reported 1,383 (59.5) 62 (38.5) 40 (40.4) 1,485 (57.4)
1 reported 650 (27.9) 54 (33.5) 31 (31.3) 735 (28.4)
>1 reported
293 (12.6)
45 (28.0)
28 (28.3)
366 (14.2)
Concurrent conditions, no. (%)
Diabetes 117 (5.0) 19 (11.8) 15 (15.2) 151 (5.8)
Hypertension 159 (6.8) 20 (12.4) 16 (16.2) 195 (7.5)
Heart disease 95 (4.1) 11 (6.8) 14 (14.1) 120 (4.6)
Lung disease; asthma, COPD, or both 57 (2.5) 13 (8.1) 9 (9.1) 79 (3.1)
Epilepsy 229 (9.8) 25 (15.5) 14 (14.1) 268 (10.4)
Overweight, body mass index >25 kg/m2 587 (25.2) 67 (41.6) 24 (24.2) 678 (26.2)

*All persons included in the study had intellectual disabilities and tested positive for SARS-CoV-2 by PCR. Category totals do not always add up to column totals because of missing responses; percentages are based on variable totals per category. COPD, chronic obstructive pulmonary disease; IQR, interquartile range. †Case-fatality ratio 3.8%.