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Table 4 Individual and joint predictive performance of pack-years, GRS, and MRS for LC risk

From: Individual and joint contributions of genetic and methylation risk scores for enhancing lung cancer risk stratification: data from a population-based cohort in Germany

Predictor

AUC (95% CI)

NRIa

IDIa

Apparent

.632+

%

p value

%

p value

All participantsb

      

 GRS

0.587 (0.536–0.638)

0.586 (0.535–0.637)

    

 MRS

0.777 (0.731–0.823)

0.777 (0.731–0.823)

    

 GRS + MRS

0.784 (0.738–0.830)

0.783 (0.738–0.829)

    

 Pack-years

0.782 (0.733–0.830)

0.781 (0.733–0.830)

    

 Pack-years + GRS

0.779 (0.730–0.827)

0.777 (0.728–0.826)

7.5

0.0146

0.86

0.0082

 Pack-years + MRS

0.813 (0.767–0.859)

0.812 (0.766–0.858)

12.3

0.0355

1.99

0.0157

 Pack-years + GRS + MRS

0.813 (0.767–0.859)

0.810 (0.764–0.857)

13.9

0.0198

2.59

0.0012

Ever smokersc

      

 GRS

0.593 (0.536–0.649)

0.592 (0.536–0.649)

    

 MRS

0.696 (0.642–0.751)

0.696 (0.641–0.751)

    

 GRS + MRS

0.721 (0.667–0.775)

0.717 (0.663–0.770)

    

 Pack-years

0.702 (0.644–0.759)

0.701 (0.644–0.759)

    

 Pack-years + GRS

0.708 (0.651–0.765)

0.705 (0.647–0.762)

12.7

0.0097

1.39

0.0059

 Pack-years + MRS

0.731 (0.675–0.787)

0.728 (0.672–0.784)

16.6

0.0100

1.89

0.0104

 Pack-years + GRS + MRS

0.743 (0.687–0.798)

0.737 (0.681–0.792)

16.6

0.0163

2.96

0.0002

Heavy smokersd

      

 GRS

0.574 (0.494–0.654)

0.571 (0.491–0.650)

    

 MRS

0.629 (0.550–0.707)

0.628 (0.549–0.707)

    

 GRS + MRS

0.649 (0.570–0.727)

0.635 (0.556–0.714)

    

 Pack-years

0.605 (0.525–0.684)

0.605 (0.525–0.684)

    

 Pack-years + GRS

0.619 (0.540–0.698)

0.610 (0.531–0.690)

14.5

0.0598

1.52

0.0456

 Pack-years + MRS

0.662 (0.584–0.740)

0.652 (0.574–0.730)

19.4

0.0357

2.13

0.0322

 Pack-years + GRS + MRS

0.672 (0.595–0.749)

0.654 (0.576–0.732)

26.7

0.0106

3.35

0.0036

  1. GRS genetic risk score, MRS methylation risk score, LC lung cancer, AUC area under the curve, CI confidence interval, NRI net reclassification improvement, IDI integrated discrimination improvement
  2. aNRI and IDI were estimated between combined models including pack-years and risk scores and the pack-years only model
  3. bCase/control number 143/1460 in all participants
  4. cCase/control number 123/712 in ever smokers
  5. dCase/control number 69/205 in heavy smokers