Volume 29, Number 6—June 2023
Research
SARS-CoV-2 Vaccine Effectiveness against Omicron Variant in Infection-Naive Population, Australia, 2022
Lauren E. Bloomfield, Sera Ngeh, Gemma Cadby, Kate Hutcheon, and Paul V. Effler
Table 7
Demographic characteristics of matched pairs for analysis for homologous versus heterologous 3-dose schedule SARS-CoV-2 vaccine effectiveness subanalysis, Western Australia, Australia, February 1, 2022–May 31, 2022*
| Characteristic | Homologous schedule, no. (%) | Heterologous schedule, no. (%) |
|---|---|---|
| Age group, y | ||
| 16–19 | 8,409 (5.4) | 0 (0.2) |
| 20–29 | 33,199 (23.5) | 249 (6.8) |
| 30–39 | 42,223 (29.0) | 268 (6.0) |
| 40–49 | 44,699 (28.4) | 291 (2.7) |
| 50–59 | 17,565 (11.3) | 4,449 (16.8) |
| 60–69 | 1,442 (1.2) | 10,897 (38.4) |
| 70–79 | 370 (0.3) | 5,923 (21.0) |
| >80 |
1,244 (0.9) |
2,109 (8.0) |
| Sex | ||
| F | 84,961 (55.8) | 11,458 (46.2) |
| M | 63,950 (43.9) | 12,706 (53.4) |
| Unspecified |
240 (0.3) |
25 (0.5) |
| Aboriginal Status | ||
| Non-Aboriginal | 147,475 (98.7) | 24,069 (99.2) |
| Aboriginal |
1,676 (1.3) |
117 (0.8) |
| No. comorbidities | ||
| 0 | 143,910 (96.6) | 19,940 (85.0) |
| 1 | 1,656 (1.0) | 780 (2.7) |
| 2 | 2,997 (1.9) | 2,284 (8.0) |
| 3 | 153 (0.1) | 258 (0.9) |
| 4 | 337 (0.2) | 624 (2.3) |
| >5 |
98 (0.1) |
300 (1.1) |
| IRSAD | ||
| 1 | 306 (0.3) | 31 (0.5) |
| 2 | 6,641 (4.7) | 1,024 (4.7) |
| 3 | 3,074 (2.1) | 561 (2.3) |
| 4 | 12,710 (8.6) | 2,649 (10.7) |
| 5 | 14,401 (9.4) | 2,756 (10.5) |
| 6 | 14,992 (10.2) | 1,846 (8.4) |
| 7 | 15,669 (10.5) | 2,268 (9.5) |
| 8 | 23,381 (15.4) | 2,825 (11.7) |
| 9 | 30,236 (20.4) | 4,827 (20.4) |
| 10 | 27,741 (18.5) | 5,399 (21.4) |
*IRSAD, Index of Relative Socioeconomic Advantage and Disadvantage.
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Page updated: May 17, 2023
Page reviewed: May 17, 2023
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