Table 1.
Seroprevalence of SARS-CoV-2–specific IgG antibodies in HCWs in the Valiasr Hospital of Birjand, Iran
| No. (%)of participants | Seroprevalence (95% CI), % | P value | ||
|---|---|---|---|---|
| Overall | 180 | 24.4% (18.2–30.7) | P=0.03 | |
| Sex | Male | 69 (38.3) | 12.8 (7.9–17.7) | |
| Female | 111 (61.7) | 11.7 (7–16.4) | ||
| Age, y | ≤30 | 72 (40) | 9.1 (4.8–13.3) | P=0.24 |
| 31–40 | 61 (33.9) | 6.3 (2.7–9.8) | ||
| ≥41 | 47 (26.1) | 8.6 (4.5–12.7) | ||
| Location | Village | 177 (98.3) | 22.5 (16.4–28.6) | P=0.002 |
| Town | 3 (1.7) | 1.7 (0–3.6) | ||
| Underlying disease | Yes | 15 (8.3) | 1.7 (0–3.6) | P=0.68 |
| No | 165 (91.7) | 22.8 (16.7–28.9) | ||
| Family member with | Yes | 62 (34.4) | 13.2 (8.2–18.1) | P=0.002 |
| COVID-19 | No | 118 (65.6) | 10.9 (6.3–15.4) | |
| Occupation | Physician | 32 (17.8) | 3.9 (1.1–6.7) | P=0.004 |
| Nurse | 60 (33.3) | 9.4 (5.1–13.7) | ||
| Laboratory technician | 34 (18.9) | 2.2 (0–4.3) | ||
| Hospital service workers | 38 (21.1) | 8.9 (4.7–13) | ||
| Administrative staff | 16 (8.9) | 0 (0–0) | ||
| Area of care | Infectious diseases | 49 (27.2) | 10 (5.6–14.4) | P=0.09 |
| Hospital emergency | 32 (17.8) | 5.6 (2.2–8.9) | ||
| Intensive care unit | 13 (7.2) | 1.1 (0–2.6) | ||
| Internal ward | 11 (6.1) | 2.2 (0–4.3) | ||
| Pediatric ward | 14 (7.8) | 0.6 (0–1.7) | ||
| Radiology | 3 (1.7) | 0.6 (0–1.7) | ||
| Laboratory | 39 (21.7) | 3.3 (0.6–5.9) | ||
| Administrative department | 19 (10.5) | 1.1 (0–2.6) | ||
| Working hours (week) | ≤45 | 96 (53.3) | 11.3 (6.7–15.9) | P=0.58 |
| ≥45 | 84 (46.7) | 12.8 (7.9–17.7) | ||
| Night shift (month) | ≤ 2 | 93 (51.7) | 13.3 (8.3–18.3) | P=0.19 |
| 3–6 | 77 (42.8) | 10.9 (6.3–15.4) | ||
| ≥7 | 10 (5.5) | 3.1 (0–5.6) | ||
| Work experience | ≤2 | 35 (19.4) | 4.1 (1.2–7) | P=0.98 |
| 3–10 | 67 (37.2) | 8.9 (4.7–13) | ||
| 11–20 | 55 (30.6) | 7.5 (3.6–11.3) | ||
| ≥21 | 23 (12.8) | 2.7 (0.3–5.1) | ||
| Occupational stress | Yes | 104 (57.8) | 13.2 (8.2–18.1) | P=0.62 |
| No | 76 (42.2) | 10.9 (6.3–15.4) |