2.6 Statistical analysis This is a convenience sample of a previously described periodontitis-resistant cohort (Khocht et al., 2021). Twenty subjects were lean (BMI < 25), 11 subjects were overweight (BMI between 25 and 30) and 8 subjects were obese (BMI ≥ 30). For data analysis purposes, overweight and obese subjects were combined into a single group. The distributions of clinical periodontal measures, metabolite concentrations and relative abundance of microbial taxa were positively skewed.