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RESULTS Qualitative and quantitative data The positive and negative ion data were combined into data matrix tables (Supplementary file Tables S2 and S3), which contained all the information extracted from the raw data that could be used for subsequent analysis
Aim for at least eight glasses a day, and your mouth will thank you
Health outcome variables were all causes mortality (ICD-9 codes 001998), all cancer (ICD-9 codes 140208), oral cancer (ICD-9 codes 140149), esophageal cancer (ICD-9 codes 150), stomach cancer (ICD-9 codes 151), colon rectum cancer (ICD-9 codes 153154), liver cancer (ICD-9 codes 155), pancreas cancer (ICD-9 codes 157), lung cancer (ICD-9 codes 162), breast cancer (ICD-9 codes 174), prostate cancer (ICD-9 codes 185), bladder cancer (ICD-9 codes 188), Diabetes mellitus (ICD-9 codes 250), cardiovascular disease (CVD) (ICD-9 codes 390459), ischemic heart disease (ICD-9 codes 410414), stroke (ICD-9 codes 430438), respiratory system disease (ICD-9 codes 460519), COPD (ICD-9 codes 491496), digestive system disease (ICD-9 codes 520579), cirrhosis (ICD-9 codes 571), kidney disease (ICD-9 codes 580589), accidents (ICD-9 codes 800949) and suicide (ICD-9 codes 950959)
