Table 3.

Subgroup analysis between METS-IR index with gallbladder stone prevalence.

Characteristic	Model 1 OR (95%CI)	Model 2 OR (95%CI)	Model 3 OR (95%CI)
Subgroup analysis stratified by gender
Male	1.0226 (1.0110, 1.0344)	1.0283 (1.0154, 1.0414)	1.0206 (1.0064, 1.0350)
Female	1.0378 (1.0302, 1.0455)	1.0418 (1.0336, 1.0501)	1.0382 (1.0294, 1.0470)
Subgroup analysis stratified by age (years)
20-39	1.0458 (1.0328, 1.0590)	1.0523 (1.0384, 1.0664)	1.0499 (1.0344, 1.0655)
40-59	1.0368 (1.0257, 1.0480)	1.0386 (1.0270, 1.0503)	1.0313 (1.0190, 1.0438)
60-80	1.0231 (1.0131, 1.0332)	1.0238 (1.0134, 1.0343)	1.0164 (1.0052, 1.0278)
Subgroup analysis stratified by hypertension
YES	1.0262 (1.0174, 1.0352)	1.0341 (1.0243, 1.0441)	1.0265 (1.0161, 1.0370)
NO	1.0305 (1.0214, 1.0396)	1.0381 (1.0282, 1.0481)	1.0365 (1.0261, 1.0469)
Subgroup analysis stratified by diabetes
YES	1.0227 (1.0112, 1.0344)	1.0320 (1.0182, 1.0459)	1.0299 (1.0155, 1.0444)
NO	1.0292 (1.0216, 1.0369)	1.0359 (1.0277, 1.0442)	1.0346 (1.0261, 1.0432)
Subgroup analysis stratified by race
Mexican American	1.0238 (1.0091, 1.0386)	1.0341 (1.0176, 1.0509)	1.0273 (1.0100, 1.0450)
White	1.0322 (1.0230, 1.0416)	1.0399 (1.0298, 1.0500)	1.0351 (1.0241, 1.0463)
Black	1.0331 (1.0200, 1.0463)	1.0302 (1.0164, 1.0441)	1.0289 (1.0142, 1.0438)
Other Race	1.0329 (1.0157, 1.0504)	1.0449 (1.0261, 1.0641)	1.0361 (1.0153, 1.0572)

Model 1=no covariates were adjusted.

Model 2=Model 1+age, gender, race education, marital status were adjusted.

Model3=Model 2+, diabetes, blood pressure, PIR, total water, total kcal, total sugar, smoked, physical activity, alcohol use, serum cholesterol were adjusted.

The subgroup analysis was stratified by sex, race, age, diabetes and hypertension, not adjusted for the stratification variable itself.