Table 2.

Comparison of measles antibody levels by characteristics.

Variable	N	Seropositivity rate n (%) (95% CI)	χ2/P	GMT (mIU/mL) (95% CI)	F/P
Region
Xinjiang	1170	1011 (86.41%, 84.33%–88.26%)	6.47/0.011	495.95 (462.76–531.53)	1.14/0.285
Jiangsu	913	751 (82.26%, 79.64%–84.60%)		465.74 (423.25–512.50)
Age group
<8 months	84	40 (47.62%, 36.60–58.82)	325.08/<0.001	130.32 (96.15–176.59)	113.46/<0.001
8–17 months	96	27 (28.13%, 19.84–38.25)		60.29 (39.82–91.30)
18 months-3 years	219	211 (96.35%, 92.96–98.34)		909.46 (814.73–1015.20)
4–6 years	602	582 (96.68%, 94.92–97.84)		769.03 (722.84–818.17)
7–14 years	689	582 (84.47%, 81.58–86.98)		439.03 (401.46–480.12)
≥15 years	387	320 (82.69%, 78.60–86.13)		446.94 (396.47–503.84)
Sex
Male	1,112	934 (83.99%, 81.72%–86.03%)	0.56/0.455	480.36 (446.43–516.86)	0.03/0.872
Female	971	828 (85.27%, 82.90%–87.36%)		484.91 (443.34–530.38)
Ethnic group
Han	1206	998 (82.75%, 80.52%–84.78%)	11.00/0.012	467.72 (432.64–505.64)	1.10/ 0.348
Uyghur	316	285 (90.19%, 86.41%–93.00%)		536.96 (466.69–617.80)
Kazakh	378	323 (85.45%, 81.54%–88.65%)		500.47 (439.50–569.90)
Others	183	156 (85.25%, 79.38%–89.66%)		456.38 (384.52–541.67)
Migration status
Permanent residents	1925	1615 (83.90%, 82.19%–85.47%)	8.67/0.003	470.73 (443.38–499.78)	8.71/0.003
Migrants	158	147 (93.04%, 87.96%–96.07%)		651.40 (540.74–784.70)
MCV doses
0 dose	208	87 (41.83%, 35.33%–48.62%)	325.08/<0.001	108.91 (82.73–143.37)	113.46/<0.001
1 dose	42	36 (85.71%, 72.16%–93.28%)		370.91 (195.97–702.03)
2 doses	1550	1382 (89.16%, 87.52%–90.61%)		575.37 (544.03–608.52)
≥3 doses	283	257 (90.81%, 86.88%–93.65%)		571.09 (519.72–627.53)
Total	2083	1762(84.59%, 82.98–86.08)		482.48 (455.63–510.90)