Table 2.
Absolute Risk of Hospitalization by 28 Days Following a Positive Test for SARS-CoV-2, Expressed as a Percentage
| % (95% CI) | ||
|---|---|---|
| Comorbidities/Sex/Age group | Wild-type | Alpha |
| No comorbidities | ||
| Females | ||
| 0 to <40 years | .55 (.49–.61) | .74 (.67–.82) |
| 40 to <55 years | 1.45 (1.32–1.59) | 1.96 (1.79–2.12) |
| 55 to <65 years | 2.26 (2.03–2.48) | 3.02 (2.73–3.32) |
| 65 to <75 years | 4.16 (3.70–4.63) | 5.54 (4.93–6.14) |
| 75 to <85 years | 5.76 (4.95–6.57) | 7.61 (6.56–8.65) |
| ≥85 years | 9.82 (7.97–11.67) | 12.77 (10.44–15.09) |
| Males | ||
| 0 to <40 years | .84 (.75–.92) | 1.13 (1.01–1.24) |
| 40 to <55 years | 2.20 (2.01–2.39) | 2.95 (2.71–3.19) |
| 55 to <65 years | 3.39 (3.06–3.72) | 4.52 (4.11–4.94) |
| 65 to <75 years | 6.19 (5.51–6.86) | 8.16 (7.31–9.00) |
| 75 to <85 years | 8.47 (7.31–9.64) | 11.07 (9.60–12.54) |
| ≥85 years | 14.11 (11.55–16.68) | 18.07 (14.94–21.20) |
| One comorbidity | ||
| Females | ||
| 0 to <40 years | 1.02 (.88–1.15) | 1.37 (1.19–1.55) |
| 40 to <55 years | 2.67 (2.38–2.95) | 3.57 (3.20–3.94) |
| 55 to <65 years | 4.10 (3.67–4.53) | 5.45 (4.90–6.01) |
| 65 to <75 years | 7.43 (6.63–8.22) | 9.74 (8.73–10.76) |
| 75 to <85 years | 10.11 (8.82–11.41) | 13.13 (11.50–14.77) |
| ≥85 years | 16.62 (13.84–19.40) | 21.09 (17.73–24.46) |
| Males | ||
| 0 to <40 years | 1.54 (1.35–1.74) | 2.08 (1.81–2.34) |
| 40 to <55 years | 4.00 (3.59–4.41) | 5.32 (4.80–5.84) |
| 55 to <65 years | 6.10 (5.50–6.70) | 8.04 (7.29–8.79) |
| 65 to <75 years | 10.82 (9.74–11.90) | 14.02 (12.69–15.35) |
| 75 to <85 years | 14.51 (12.75–16.28) | 18.55 (16.40–20.70) |
| ≥85 years | 23.05 (19.46–26.65) | 28.64 (24.47–32.81) |
| Two or more comorbidities | ||
| Females | ||
| 0 to <40 years | 1.63 (1.39–1.87) | 2.19 (1.87–2.51) |
| 40 to <55 years | 4.21 (3.68–4.75) | 5.60 (4.90–6.30) |
| 55 to <65 years | 6.41 (5.64–7.18) | 8.44 (7.46–9.43) |
| 65 to <75 years | 11.34 (10.10–12.59) | 14.67 (13.11–16.22) |
| 75 to <85 years | 15.18 (13.41–16.95) | 19.36 (17.18–21.54) |
| ≥85 years | 23.99 (20.52–27.46) | 29.72 (25.68–33.75) |
| Males | ||
| 0 to <40 years | 2.46 (2.10–2.81) | 3.29 (2.83–3.76) |
| 40 to <55 years | 6.26 (5.51–7.01) | 8.25 (7.29–9.20) |
| 55 to <65 years | 9.40 (8.36–10.43) | 12.24 (10.94–13.53) |
| 65 to <75 years | 16.17 (14.56–17.78) | 20.55 (18.61–22.50) |
| 75 to <85 years | 21.21 (18.93–23.48) | 26.51 (23.82–29.19) |
| ≥85 years | 32.12 (27.93–36.31) | 38.79 (34.16–43.41) |
Abbreviations: CI, confidence interval; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.