Table 5.

The IL-1 genotype has added value to conventional risk factors, smoking and diabetes, in predicting moderate to severe periodontitis^{a, *}

		Smoking or diabetesb		IL-1 genotypec, d
		(All subjects, n = 1100)		(Non-smoking and non-diabetic: n = 343e)
		Negative	Positive	Negative	Positive
Control	Count	237	277	154	51
	%	60	39	66	46
Casef	Count	156	430	79	59
	%	40	61	34	54

^aDARIC population.

^bOR = 2.4, p < 0.0001.

^cIL1B composite genotype pattern 3.

^dOR = 2.3, p = 0.0005.

^eOut of 393 individuals who were non-smoker and non-diabetic 343 had data for IL-1 genotype.

^fModerate to severe periodontitis.

^*[Corrections added on 17th September 2014, after first online publication: errors in Table 5 were rectified.].