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Table 4 Parameter estimates of the alternative structural model specifications for the risk of being overweight/obese

From: Re-visiting the relationship between neighbourhood environment and BMI: an instrumental variables approach to correcting for residential selection bias

Independent variables Instrumental variables odds ratios (95% CI) Logistic regression odds ratios (95% CI)
AGEa 1.09 1.09
(1.07–1.10) (1.07–1.10)
AGE_SQa 1.01 1.01
(1.00–1.00) (1.00–1.00)
EDUC 0.89 0.89
(0.87–0.91) (0.87–0.91)
MARRIED 1.11 1.14
(0.99-1.25) (1.01–1.28)
BMIYR 1.04 1.04
(1.03–1.06) (1.03–1.06)
SIBBMI 2.37 2.38
(2.23–2.53) (2.23–2.53)
RESWALK 0.90 1.00
(0.83–0.97) (0.96–1.04)
McFadden R2 0.08 0.08
  1. aAge is centered before creating age squared so as to avoid any possible collinearity problems associated with entering both age and age squared as regressors.