Supplementary Tables 1 - 4 from Oral Hygiene and Risk of Nasopharyngeal Carcinoma—A Population-Based Case–Control Study in China

Supplementary Tables 1-4. Supplementary Table 1. Odds ratios (ORs) and 95% confidence intervals (CIs) of nasopharyngeal carcinoma (NPC) associated with oral health among ever smokers in southern China (2010-2014). Supplementary Table 2. Stratified odds ratios (ORs) and 95% confidence intervals (CIs) of nasopharyngeal carcinoma (NPC) associated with number of teeth lost after age 20 years.* Supplementary Table 3. Stratified odds ratios (ORs) and 95% confidence intervals (CIs)of nasopharyngeal carcinoma (NPC) associated with frequency of tooth brushing.* Supplementary Table 4. Odds ratios (ORs) and 95% confidence intervals (CIs) of nasopharyngeal carcinoma (NPC) associated with oral health in southern China - restricted to cases interviewed within 30 days of diagnosis (2010-2014).