Research Article

Relationship between Body Roundness Index and Risk of Type 2 Diabetes in Japanese Men and Women: A Reanalysis of a Cohort Study

Table 2

Association between BRI and incident T2DM by gender in the NAGALA study.

ExposureNonadjustedAdjust IAdjust IIAdjust III
HR (95% CI) valueHR (95% CI) valueHR (95% CI) valueHR (95% CI) value

Men
BRI Z score1.94 (1.78, 2.11)<0.0011.96 (1.78, 2.15)<0.0011.50 (1.34, 1.69)<0.0011.34 (1.18, 1.52)<0.001

BRI quartile
BRI Q11 (reference)1 (reference)1 (reference)1 (reference)
BRI Q21.40 (0.86, 2.30)0.1781.35 (0.83, 2.22)0.2281.04 (0.63, 1.71)0.8920.64 (0.38, 1.07)0.086
BRI Q31.99 (1.26, 3.15)0.0031.80 (1.14, 2.86)0.0120.99 (0.61, 1.62)0.9680.55 (0.33, 0.92)0.023
BRI Q46.09 (4.05, 9.14)<0.0015.35 (3.55, 8.07)<0.0012.13 (1.33, 3.40)0.0021.05 (0.64, 1.72)0.841
P For trend<0.001<0.001<0.0010.009

Women
BRI Z score2.12 (1.92, 2.35)<0.0012.11 (1.88, 2.35)<0.0011.68 (1.44, 1.97)<0.0011.48 (1.26, 1.74)<0.001

BRI quartile
BRI Q11 (reference)1 (reference)1 (reference)1 (reference)
BRI Q22.11 (0.76, 5.81)0.151.96 (0.71, 5.42)0.1931.89 (0.68, 5.23)0.221.59 (0.57, 4.43)0.375
BRI Q33.59 (1.39, 9.29)0.0083.16 (1.22, 8.19)0.0182.32 (0.88, 6.11)0.0871.66 (0.62, 4.44)0.313
BRI Q414.4 (6.17, 33.7)<0.00111.3 (4.77, 26.61)<0.0015.18 (2.05, 13.08)<0.0012.74 (1.05, 7.14)0.039
P For trend<0.001<0.001<0.0010.019

Note. Adjust I model adjusts for age; Adjust II model adjusts for adjust I + alcohol intake, smoking status, fatty liver, and SBP; Adjust III model adjusts for adjust II + FPG, HbA1c, HDL-C, TG, and TC. BRI, body roundness index.