Skip to main content

Table 5 Prevalence ratios of insulin resistance, altered HOMA-IR and hyperinsulinemia, according to time since menarche

From: Insulin resistance and associated factors in female adolescents from two capital cities in the north and south of Brazil

 

Porto Velho (382)

p value

Porto Alegre (507)

p value

Post-menarche

Peri-menarche

Post-menarche

PR

Reference

PR

HOMA-IR

 Mod. 1

0.46 (0.21–1.04)

0.062

1

0.55 (0.34–0.87)

0.013

 Mod. 2

0.60 (0.31–1.16)

0.122

1

0.64 (0.34–1.20)

0.160

 Mod. 3

0.53 (0.29–0.96)

0.038

1

0.64 (0.38–1.07)

0.090

 Mod. 4

0.49 (0.24–1.00)

0.050

1

0.64 (0.78–1.05)

0.079

Insulin

 Mod. 1

0.57 (0.27–1.18)

0.125

1

0.47 (0.29–0.77)

0.005

 Mod. 2

0.68 (0.35–1.30)

0.230

1

0.54 (0.31–0.93)

0.031

 Mod. 3

0.62 (0.40–0,94)

0.030

1

0.54 (0.32–0.88)

0.017

 Mod. 4

0.56 (0.34–0.94)

0.030

1

0.53 (0.32–0.87)

0.015

  1. Data are expressed as prevalence ratio and 95% confidence interval (CI); Poisson regression to Model 1; Group peri-menarche: Less than 2 years since menarche; Group post-menarche: 2 years or more since menarche; Multivariate Poisson regression to models adjusted for chronological age (increase of 1 year); ethnicity (non-white), smoking (experimented), alcohol (experimented), waist circumference and nutritional status (overweight and obesity); PR = Prevalence ratios (menarche B in relation to menarche A); p value ≤ 0.05 and 95% CI; Altered HOMA-IR: ≥ 3.16; hyperinsulinemia: > 15 mU/mL; Model 1—unadjusted; Model 2—adjusted for age and ethnicity; Model 3—adjusted for age, ethnicity, smoking, alcohol, and waist circumference; Model 4—adjusted for age, ethnicity, smoking, alcohol and nutritional status
  2. Statistically significant prevalence ratios are in bold (p < 0.05)