Risk predictor (risk marker)
	n The terms risk predictor and risk marker often used synonymously – Risk marker tends to be used when describing biological predictors, such as C-reactive protein being a marker for inflammation – Risk predictor often used for any non-etiologic variable that is a good predictor – In dentistry tend to be alternative historical measures of the disease being studied, •  such as the number of missing teeth • or past evidence of dental caries or periodontal disease