Volume 30, Number 7—July 2024
Research
Prevalence of and Risk Factors for Post–COVID-19 Condition during Omicron BA.5–Dominant Wave, Japan
Arisa Iba
, Mariko Hosozawa, Miyuki Hori, Yoko Muto, Isao Muraki, Rie Masuda, Nanako Tamiya, and Hiroyasu Iso
, Mariko Hosozawa, Miyuki Hori, Yoko Muto, Isao Muraki, Rie Masuda, Nanako Tamiya, and Hiroyasu Iso
Table 1
Response rates of persons in study of prevalence and risk factors for post–COVID-19 condition during BA.5 Omicron-dominant wave, Japan*
| Age group, y | Infected persons |
Noninfected persons |
Difference in response rates (95% CI) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| HER-SYS† | No. participants | No. responses | Response rate, % | BRRS‡ | No. participants | No. responses | Response rate, % | ||||
| Male patients | |||||||||||
| 20–29 | 3,404 | 2,979 | 611 | 20.5 | 3,404 | 2,979 | 574 | 19.3 | 1.2 (–3.3 to 5.7) | ||
| 30–39 | 3,806 | 3,328 | 1,120 | 33.7 | 3,806 | 3,328 | 896 | 26.9 | 6.8 (2.8–10.8) | ||
| 40–49 | 3,461 | 3,058 | 1,061 | 34.7 | 3,461 | 3,058 | 943 | 30.8 | 3.9 (–0.2 to 8.0) | ||
| 50–59 | 2,586 | 2,243 | 923 | 41.2 | 2,586 | 2,243 | 636 | 28.4 | 12.8 (8.1–17.5) | ||
| 60–69 | 1,152 | 1,024 | 413 | 40.3 | 1,152 | 1,024 | 326 | 31.8 | 8.5 (1.6–15.4) | ||
| Subtotal |
14,409 |
12,632 |
4,129 |
32.7 |
14,409 |
12,632 |
3,375 |
26.7 |
6.0 (3.9–8.1) |
||
| Female patients | |||||||||||
| 20–29 | 3,682 | 3,218 | 960 | 29.8 | 3,682 | 3,218 | 912 | 28.3 | 1.5 (–2.6 to 5.6) | ||
| 30–39 | 4,028 | 3,582 | 1,565 | 43.7 | 4,028 | 3,582 | 1,491 | 41.6 | 2.1 (–1.4 to 5.6) | ||
| 40–49 | 3,671 | 3,313 | 1,554 | 46.9 | 3,671 | 3,313 | 1,423 | 43.0 | 3.9 (3.2–7.5) | ||
| 50–59 | 2,386 | 2,166 | 971 | 44.8 | 2,386 | 2,166 | 884 | 40.8 | 4.0 (–0.5 to 8.5) | ||
| 60–69 | 1,100 | 1,000 | 402 | 40.2 | 1,100 | 1,000 | 333 | 33.3 | 6.9 (–0.1 to 13.9) | ||
| Subtotal |
14,867 |
13,279 |
5,456 |
41.1 |
14,867 |
13,279 |
5,047 |
38.0 |
3.1 (1.2–5.0) |
||
| Total | 29,276 | 25,911 | 9,668 | 37.3 | 29,276 | 25,911 | 8,515 | 32.9 | 4.4 (3.0–5.8) | ||
*BRRS, Basic Resident Registration system; HER-SYS, Health Center Real-Time Information-Sharing System. †Numbers of SARS-CoV-2–infected persons extracted from the HER-SYS database. ‡Numbers of age- and sex-adjusted noninfected persons extracted from the Basic Resident Registration system database.
Page created: June 05, 2024
Page updated: June 22, 2024
Page reviewed: June 22, 2024
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