“…While most studies collected primary data, one study used existing data from electronic health records (Hegde et al, 2019). Seven studies developed PPMs for undiagnosed hyperglycaemia (Lalla et al, 2011; Herman et al, 2015; Holm et al, 2016; Heji et al, 2020; Su et al, 2020; Grigoriadis et al, 2021; Montero et al, 2021) and one for diabetes (Hegde et al, 2019). Clinical periodontal measures were evaluated in all studies; however, some used partial‐mouth examinations (Herman et al, 2015; Su et al, 2020; Montero et al, 2021), did not measure clinical attachment loss (Herman et al, 2015; Lalla et al, 2011; Su et al, 2020) or did not report the reliability of examiners (Lalla et al, 2011; Herman et al, 2015; Holm et al, 2016; Hegde et al, 2019; Su et al, 2020; Grigoriadis et al, 2021; Montero et al, 2021).…”