Table 3 Subgroup analysis between WWI with gallbladder stone prevalence

Stratified by gender

< 0.001

Female

1.17 (1.11–1.23)

1.10 (1.05–1.16)

1.08 (1.03–1.14)

Male

1.11 (1.03–1.18)

1.09 (1.01–1.16)

1.07 (1.00-1.15)

Stratified by age (years)

< 0.001

18–65

1.09 (1.01–1.18)

1.08 (1.01–1.17)

1.07 (0.99–1.15)

65–75

1.18 (1.11–1.25)

1.10 (1.04–1.16)

1.08 (1.01–1.14)

75–90

1.15 (1.06–1.26)

1.11 (1.01–1.22)

1.09 (0.99–1.20)

Stratified by hypertension

< 0.001

YES

1.17 (1.10–1.24)

1.09 (1.03–1.15)

1.07 (1.02–1.13)

NO

1.15 (1.09–1.23)

1.12 (1.05–1.19)

1.09 (1.02–1.16)

Stratified by diabetes

< 0.001

YES

1.19 (1.08–1.32)

1.09 (0.99–1.19)

1.09 (0.99–1.19)

NO

1.15 (1.10–1.21)

1.10 (1.05–1.16)

1.08 (1.03–1.13)