Table 1 Distribution of rubella-positive cases by various factors
Variables | Laboratory test results for rubella | |||
|---|---|---|---|---|
N | Positive | Negative | p-value | |
N (%) | N (%) | |||
N | 86 | 29 (34%) | 57 (66%) | |
Sex | ||||
Female | 23 | 1 (4%) | 22 (96%) | Reference |
Male | 63 | 28 (44%) | 35 (56%) | < 0.0003** |
Age (years) | ||||
0–29 | 32 | 3 (9%) | 29 (91%) | Reference |
30–59 | 45 | 24 (53%) | 21 (47%) | 0.049 * |
60–79 | 9 | 2 (22%) | 7 (78%) | 0.299 |
Rubella vaccination history | ||||
Never | 21 | 8 (38%) | 13 (62%) | Reference |
Once | 11 | 4 (36%) | 7 (64%) | 0.238 |
Twice | 11 | 0 (0%) | 11 (100%) | 0.029 * |
Unknown | 43 | 17 (40%) | 26 (60%) | 0.322 |
History of definite contact of a rubella patient | ||||
Contact | 4 | 4 (100%) | 0 (0%) | Reference |
Sporadic | 82 | 25 (30%) | 57 (70%) | 0.011 * |
Laboratory test | ||||
RT-PCR | 78 | 22 (28%) | 56 (72%) | Reference |
Rubella IgM antibody | 7 | 6 (86%) | 1 (14%) | < 0.002** |
IgG from paired sera | 1 | 1 (100%) | 0 (0%) | |