Table 3 Stratified analyses of the relationship between AIP and periodontitis according to age, sex, BMI, smoking, and alcohol consumption

Age

30–40

Reference

1.187(0.775,1.818)

0.422

1.553(1.017,2.371)

0.042

1.751(1.183,2.592)

0.006

0.003

40–50

Reference

2.149(1.529,3.021)

< 0.0001

2.834(1.709,4.700)

< 0.001

3.190(2.005,5.075)

< 0.0001

< 0.0001

50–60

Reference

1.179(0.736,1.890)

0.485

1.400(0.773,2.537)

0.260

1.401(0.833,2.357)

0.198

0.188

60–70

Reference

1.782(0.890,3.569)

0.101

1.545(0.837,2.853)

0.160

1.732(0.786,3.817)

0.169

0.199

70–80

Reference

0.892(0.540,1.473)

0.647

0.816(0.486,1.372)

0.435

0.627(0.344,1.141)

0.123

0.09

Sex

Male

Reference

1.002(0.700,1.435)

0.990

1.125(0.765,1.654)

0.542

1.091(0.767,1.553)

0.621

0.51

Female

Reference

1.441(1.000,2.078)

0.050

1.674(1.188,2.359)

0.004

1.650(1.168,2.331)

0.005

0.003

BMI

<=25

Reference

1.308(0.909,1.884)

0.145

1.900(1.161,3.110)

0.012

1.680(0.874,3.227)

0.117

0.01

25–30

Reference

1.459(0.940,2.264)

0.090

1.438(0.837,2.471)

0.183

1.885(1.214,2.927)

0.006

0.01

> 30

Reference

1.297(0.813,2.070)

0.268

1.555(0.995,2.431)

0.053

1.444(0.904,2.306)

0.121

0.095

smoke

never

Reference

1.440(1.066,1.945)

0.018

1.788(1.290,2.479)

< 0.001

1.920(1.361,2.709)

< 0.001

< 0.001

former

Reference

1.199(0.791,1.819)

0.385

1.155(0.757,1.764)

0.496

1.205(0.815,1.782)

0.342

0.435

now

Reference

1.175(0.593,2.325)

0.637

1.146(0.675,1.945)

0.607

0.874(0.446,1.710)

0.687

0.527

drink

never

Reference

1.474(0.750,2.898)

0.253

1.769(0.941,3.326)

0.075

1.806(0.995,3.280)

0.052

0.044

former

Reference

1.065(0.648,1.752)

0.799

1.877(1.041,3.387)

0.037

1.848(1.040,3.284)

0.037

0.018

mild

Reference

1.314(0.869,1.989)

0.191

1.200(0.771,1.870)

0.411

1.320(0.863,2.017)

0.195

0.268

moderate

Reference

1.934(1.154,3.241)

0.014

1.941(1.100,3.427)

0.023

2.296(1.335,3.948)

0.003

0.005

heavy

Reference

1.000(0.627,1.593)

0.999

1.390(0.787,2.458)

0.250

1.137(0.670,1.929)

0.628

0.462