abnormality prevalence rate的用法和样例：
- Objective To monitor KBD prevalence rate in all country 2001 year.
- The prevalence rate of diabetes was 3.02% in people aged 15 or above.
- Results Caries prevalence rate in deciduous teeth was 85.8%, DVF was 4.61.
- Results 122 EHT of students were diagnosed and the prevalence rate was 7.44%.