Adjusted odds ratios for gastric precancerous lesions in relation to selected periodontal pathogen DNA levels and stratified by periodontal disease severity1.

PD = Pocket Depth, CAL = Clinical Attachment Loss.1Cut-points for periodontal disease severity were determined at the median.2ORs estimated in relation to a standard deviation increase in the log-transformed bacterial DNA levels and adjusted for gender, age, race, smoking status, educational attainment, BMI, and H. pylori status.3Cumulative bacterial burden is a summary measure estimated by standardizing each bacterial DNA level (dividing each person-specific value by the log-transformed population standard deviation) and summing these values across all four species.4P-value for the cross-product term of each log-transformed bacterial DNA level and each periodontal index entered as continuous variables.