Table 2. GMCs and seroprevalence of mumps antibody by region, sex and age in Jiangsu province, China, in 2012 (IU/ml).
| Characteristics | sample size | GMC | 95% CI | seroprevalence | 95% CI | |
|---|---|---|---|---|---|---|
| region | north | 500 | 117.6a | (101.6,136.1) | 63.2 | (58.8,67.4) |
| south | 1002 | 90.9 | (81.3,101.5) | 57.0 | (53.9,60.1) | |
| sex | male | 792 | 111.9b | (98.8,126.6) | 62.0 | (58.5,65.4) |
| female | 710 | 86.4 | (76.1,98.1) | 55.8 | (52.0,59.5) | |
| age | <1.5 years | 294 | 12.6c | (10.8,14.6) | 6.8 | (4.2,10.3)c |
| 1.5–2 years | 155 | 48.7c | (36.7,64.6) | 42.6 | (34.7,50.8)c | |
| 3–5 years | 237 | 166.9 | (138.0,201.9) | 70.0 | (63.8,75.8) | |
| 6–11 years | 282 | 151.7 | (129.0,178.3) | 66.7 | (60.8,72.1) | |
| 12–17 years | 165 | 194.5 | (157.7,239.9) | 77.0 | (69.8,83.2) | |
| 18–24 years | 189 | 287.8 | (244.7,338.5) | 84.7 | (78.7,89.5) | |
| 25–40 years | 180 | 240.8 | (212.5,272.9) | 88.9 | (83.4,93.1) | |
| total | 1502 | 99.1 | (90.1,108.2) | 59.1 | (56.5,61.6) | |
Abbreviations: CI, confidence interval; GMC, geometric mean concentrations
significantly lower than other age groups, p < 0.05.
anorth vs. south, p < 0.05.
bmale vs. female, p < 0.05.