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Table 5 Stepwise logistic regression analysis of the independent predictors of lower limb varicose veins (LLVV) among ever employed participants (n = 234)

From: Epidemiological, life style, and occupational factors associated with lower limb varicose veins: a case control study

Independent predictors Coefficient Adjusted OR 95% CI P value
Standing posture at work 1.13 3.10 (1.02, 9.38) 0.04*
Age 0.06 1.06 (1.02, 1.10) <0.01**
Frequent lifting of heavy objects/day 3.63 37.59 (3.52, 400.86) <0.01**
Standing > 4 h/day 1.26 3.52 (1.20, 10.33) 0.02*
Infrequent/no consumption of fiber-rich food 1.45 4.24 (1.70, 10.62) <0.01**
Drinking < 5 cups of water/day 2.24 9.42 (3.43, 25.89) <0.001***
Irregular defecation habit 1.87 6.46 (2.73, 15.27) <0.001***
Taking laxatives −1.63 0.20 (0.05, 0.08) 0.02*
  1. Abbreviations: OR odds ratio, CI confidence interval
  2. Model X2 = 157.19 (p < 0.001); Nagelkerke’s R2 = 0.65; Cox and Snell R2 = 0.48; Hosmer and Lemeshow X2 = 10.48 (p = 0.23)
  3. OR adjusted for gender, family history of varices, and potential occupational and life style risk factors significant in univariate analysis (working hours per week, nature of work, standing hours/working day, sitting hours/working day, body mass index, smoking, posture during defecation, and sleeping hours/day)
  4. Significant factors that include cells having a count less than 5 were excluded from the regression model
  5. *p<0.05
  6. **p<0.01
  7. ***p<0.001