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Table 4 Adjusted prevalence ratio of factors associated with insulin resistance in the total sample

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

 

Porto Velho and Porto Alegre (889)

HOMA-IR

Insulin

Adjusted

P value

Adjusted

P value

Level 1

 Age

  12–13 years

1

 

1

 

  14 years

0.72 (0.45–1.15)

0.173

0.82 (0.45–1.48)

0.508

  15–17 years

0.59 (0.40–0.88)

0.012

0.62 (0.40–0.96)

0.036

 Ethnicity

  Black

2.36 (1.29–4.31)

0.006

2.47 (1.20–5.08)

0.015

Others

1.28 (0.85–1.91)

0.217

1.27 (0.81–1.99)

0.289

Level 2

 Time since menarche

  ≥ 2 years

0.64 (0.42–0.97)

0.039

0.53 (0.37–0.76)

0.001

Level 3

 Model 1

  Waist circumference

   Altered

2.58 (1.97–3.38)

< 0.001

2.95 (2.08–4.19)

< 0.001

 Model 2

  Nutritional status

   Overweight and obesity

2.08 (1.58–2.73)

< 0.001

2.50 (1.81–3.46)

< 0.001

  1. Poisson regression; P value ≤ 0.05 and 95% CI; IR = HOMA ≥ 3.16, Insulin ≥ 15 mU/mL (I Diretriz de prevenção da aterosclerose na infância e adolescência, [50]). Model 1 included waist circumference and model 2 included overweight and obesity; Ethnicity: white (reference), black and others (indigenous, mixed and yellow); Group Menarche ≥ 2 years: 2 years or more since menarche; Reference: category = 1 (Less than 2 years since menarche); altered waist circumference > 90th percentile or ≥ 80 cm (IDF, [48]); nutritional status classification according to BMI-for-age z-score (WHO, [49])
  2. Statistically significant prevalence ratios are in bold (p < 0.05)