Table 1.

Comparison of demographic characteristics between cases and controls in mITT and PPS

Modified intention-to-treat population	cases(52)	controls(7276)	P
sex(male,%)	30(57.7%)	4117(56.6%)	0.8749
age(month)	19.5 ± 8.3	18.3 ± 8.0	0.2957
height(cm)	82.8 ± 9.0	81.4 ± 8.1	0.1997
weight(kg)	12.9 ± 2.7	12.4 ± 2.2	0.2523
Per-protocol population	cases(49)	controls(7091)
sex(male,%)	29(59.2%)	400(56.4%)	0.6988
age(month)	19.8 ± 8.3	18.4 ± 8.0	0.2084
height(cm)	83.2 ± 9.0	81.4 ± 8.1	0.1203
weight(kg)	13.0 ± 2.7	12.5 ± 2.2	0.1560

Sex: percent of male, P value was examined by Chi2 Test; Age: mean±SD, P value was examined by Anova; Height: mean±SD, P value was examined by Anova; Weight: mean±SD, P value was examined by Anova; Cases were detected EV71 positive while controls were detected EV71 negative.