Characteristics of the study population in relation to dental status (n = 12871).

Upper socio-economic group (SEG) refers to participants in professional/intermediate band of the Registrar General Classification; Physical inactivity refers to participants in the lowest tertile; Obesity defined as body mass index ≥30 kg/m2; Poor self rated health refers to participants giving rating of bad/very bad; moderate alcohol defined as consuming >1†C-reactive protein (CRP) measured in a sub-sample of participants (n = 6005).社会经济地位较高群体（Upper socio-economic group, SEG）指注册总署职业分类（Registrar General Classification）中处于专业/中间层级的研究对象；身体活动不足指归入最低三分位组的研究对象；肥胖定义为身体质量指数（body mass index, BMI）≥30 kg/m²；自评健康状况较差指给出“差”或“极差”评分的研究对象；适度饮酒定义为饮酒量>1†C反应蛋白（C-reactive protein, CRP），该指标的检测仅在样本量为6005的子样本研究对象中开展。