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Table 5 Determinants of IR (HOMA-IR ≥p95a) - results from multivariate mixed logistic regression models

From: Longitudinal associations of lifestyle factors and weight status with insulin resistance (HOMA-IR) in preadolescent children: the large prospective cohort study IDEFICS

N = 1083 Model 1b (with BMI z-score) Model 2b (with waist z-score)
OR 95 % CI OR 95 % CI
BMI z-score (Cole)
 (unit change from mean) 2.6 2.1–3.1   
Waist z-score (Cole)
 (unit change from mean)    2.2 1.9–2.6
Time spent in MVPAc
 1st Quartile (≤ 27 min./day) Ref.   Ref.  
 2nd Quartile (27 - ≤38.7 min./day) 0.9 0.6–1.5 1.1 0.7–1.7
 3rd Quartile (38.7 - ≤54.6 min./day) 0.5 0.3–0.9 0.5 0.3–0.9
 4th Quartile (≥ 54.6 min./day) 0.7 0.5–1.1 0.7 0.5–1.1
Sex
 (female versus male) 2.2 1.5–3.1 2.5 1.8–3.6
Age
 (unit change from mean) 1.0 0.9–1.2 1.0 0.9–1.1
ISCED
 Low (1–2) 1.2 0.7–2.2 1.3 0.7–2.3
 Medium (3–4) 1.2 0.9–1.8 1.2 0.8–1.8
 High (5–6) Ref. Ref. Ref. Ref.
Audio-visual media time (h/d)
 (unit change from mean) 1.2 1.0–1.4 1.2 1.0–1.4
Fat consumption propensity scored
 (unit change from mean) 1.2 1.0–1.4 1.2 1.0–1.4
  1. Figures in bold indicate a significant effect. Confidence bounds of 1.0 are caused by rounding
  2. aAge- and sex-specific 95th percentiles (p95) from Peplies et al. [29]
  3. bAnalyses were adjusted for all parameters in the respective column, including country as a random effect to account for the clustered study design
  4. c MVPA moderate to vigorous physical activity
  5. dPropensity to consume items high in or fat, relative to frequency of all items on food frequency questionnaire. The score was included into the model in a modified form: it was divided by 10 to obtain meaningful effect estimates – one unit in the multivariate model thus represents 10 units of the original score used in the univariate model