Table 1.
Comparison between healthcare workers who were seropositive and seronegative to measles
| Factor | Seropositive group (n = 1,453) |
Seronegative group (n = 126) |
P value | Multivariable analysis |
||
|---|---|---|---|---|---|---|
| aOR | 95% CI | Adjusted P value |
||||
| Age group (birth year) | < .001 | |||||
| 20–25 yr (1999–1994) 26–29 yr (1993–1990) 30–34 yr (1989–1985) 35–39 yr (1984–1980) 40–44 yr (1979–1975) 45–49 yr (1974–1970) ≥50 yr (1969-) |
291 (78.6) 280 (93.6) 204 (95.8) 171 (95.0) 124 (96.1) 149 (99.3) 234 (98.3) |
79 (21.4) 19 (6.4) 9 (4.2) 9 (5.0) 5 (3.9) 1 (0.7) 4 (1.7) |
Reference 4.8 8.5 9.4 12.6 96.4 37.4 |
2.7–8.5 3.9–18.2 3.7–23.8 4.0–39.3 11.7–796.7 10.7–130.5 |
< .001 < .001 < .001 < .001 < .001 < .001 |
|
| Sex | .004 | |||||
| Male Female |
418 (95.2) 1035 (90.8) |
21 (4.8) 105 (9.2) |
Reference 0.6 |
0.3–1.0 | .065 | |
| Occupational group | .002 | |||||
| Doctor Nurse Nurse aide Other clinical HCWs Administrative staff |
273 (96.5) 619 (90.0) 133 (95.0) 149 (88.2) 279 (93.3) |
10 (3.5) 69 (10.0) 7 (5.0) 20 (11.8) 20 (6.7) |
Reference 1.0 0.5 0.5 0.6 |
0.5–2.3 0.2–1.6 0.2–1.1 0.3–1.3 |
.920 .256 .076 .205 |
|
| Previous MCV immunization | < .001 | |||||
| Unknown One dose Two doses or more |
682 (96.2) 548 (86.7) 223 (93.7) |
27 (3.8) 84 (13.3) 15 (6.3) |
Reference 1.4 4.2 |
0.7–2.9 1.7–10.1 |
.333 .002 |
|
aOR, adjusted odds ratio; CI, confidence interval; HCW, healthcare worker; MCV, measles-containing vaccine.