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Table 2 Results for initial longitudinal models assessing BMI percentile change among children aged 2–3 in the NLSCY*

From: Effects of neighbourhood income on reported body mass index: an eight year longitudinal study of Canadian children

  Parameter Model A   Model B  
   Estimate 95% CI Estimate 95% CI
Initial status π 0i     
Intercept β 00 62.16 61.14 to 63.18 64.84 63.5 to 66.17
Rate of change π 1i     
Intercept β 10    -1.36 -1.83 to -0.89
Random Effects      
   Level 2: In initial status σ 0 2 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGacaGaaiaabeqaaeqabiWaaaGcbaacciGae83Wdm3aa0baaSqaaiabicdaWaqaaiabikdaYaaaaaa@2FAA@ 119.60 106.66 to 132.53 124.72 105.03 to 144.42
Covariance σ 01    -1.80 -7.07 to 3.48
In rate of change σ 1 2 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGacaGaaiaabeqaaeqabiWaaaGcbaacciGae83Wdm3aa0baaSqaaiabigdaXaqaaiabikdaYaaaaaa@2FAC@    0.94 -1.14 to 3.02
   Level 1: Within person σ ε 2 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGacaGaaiaabeqaaeqabiWaaaGcbaacciGae83Wdm3aa0baaSqaaiab=v7aLbqaaiabikdaYaaaaaa@305E@ 975.73 946.37 to 1005.09 964.62 933.18 to 996.06
Goodness of Fit      
-2 Log Likelihood   88140.50   88102.66  
  1. * NLSCY = National Longitudinal Survey of Children and Youth (Canadian); Estimates based on weighted data. Data used are for a cohort of children aged 2–3 at baseline (1994) and assessed bi-annually until 2002.