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Table 2 Regression Results of log-BMI and zBMI

From: A three-year multifaceted intervention to prevent obesity in children of Mexican-heritage

  log-BMI zBMI
Girls
(n = 347)
Boys
(n = 330)
Girls
(n = 347)
Boys
(n = 330)
Predictors N (# Observation) 1295 1236 1295 1236
Intercept Β 2.70 2.69 0.30 0.14
Standard error 0.02 0.02 0.12 0.15
P value <0.001 <0.001 0.01 0.36
Intervention Β 0.01 0.04 −0.02 0.25
1 = treatment; 2 = comparison Standard error 0.02 0.02 0.10 0.12
P value 0.69 0.03 0.81 0.04
Duration of being in the program Β 0.00 0.00 0.00 0.00
Standard error 0.00 0.00 0.00 0.00
P value 0.83 0.78 0.74 0.43
Days from the start of intervention to each measurement Β 0.00 0.00 0.00 0.00
Standard error 0.00 0.00 0.00 0.00
P value <0.001 <0.001 0.13 0.22
Overweight at baseline (ref. normal) Β 0.12 0.11 0.94 0.96
Standard error 0.02 0.02 0.11 0.14
P value <0.001 <0.001 <0.001 <0.001
Obese at baseline (ref. normal) Β 0.32 0.32 1.82 1.92
Standard error 0.01 0.02 0.09 0.11
P value <0.001 <0.001 <0.001 <0.001
Age group 2 (ref. age group 1) Β 0.04 0.04 0.05 0.02
  Standard error 0.02 0.02 0.09 0.12
  P value 0.01 0.05 0.58 0.88
Age group 3 (ref. age group 1) Β 0.11 0.10 0.11 0.14
Standard error 0.02 0.02 0.10 0.11
P value <0.001 <0.001 0.25 0.23
Mother’s place of birtha
1 = United States; 2 = Mexico
Β 0.01 −0.01 0.09 −0.04
Standard error 0.01 0.01 0.07 0.08
P value 0.21 0.44 0.19 0.67
Intervention × age group 2 Β 0.00 −0.03 − 0.06 − 0.22
Standard error 0.02 0.02 0.13 0.15
P value 0.91 0.16 0.63 0.16
Intervention × age group 3 Β −0.03 −0.05 −0.05 − 0.30
Standard error 0.02 0.02 0.13 0.15
P value 0.25 0.04 0.73 0.04
Intervention × overweight at baseline Β 0.02 0.01 0.17 −0.05
Standard error 0.02 0.03 0.15 0.17
P value 0.51 0.79 0.26 0.78
Intervention × obese at baseline Β −0.04 −0.06 −0.05 − 0.08
Standard error 0.02 0.02 0.13 0.14
P value 0.04 0.01 0.73 0.56
  1. Abbreviation: BMI body mass index, zBMI standardized body mass index. aHouseholds that were not of Mexican-heritage did not meet eligibility criteria