Table 4 Caries risk factors of the 5-year-old Lisu children (Zero-inflated-model, n = 404)
From: Dental caries status of Lisu preschool children in Yunnan Province, China: a cross-sectional study
Negative binomial portion (dmft> 0) | Variables | IRR | 95% C.I. | p-value |
Brushing frequency (times/day) | 0.001 | |||
≥1 | 1.363 | 1.136–1.637 | ||
< 1* | ||||
Zero-inflated portion (dmft = 0) | Variables | OR | 95% C.I. | p-value |
Family monthly income | 0.004 | |||
≥3001RMB | 0.266 | 0.119–0.593 | 0.001 | |
501RMB-3000RMB | 0.615 | 0.304–1.242 | 0.175 | |
≤500RMB* |