Table 2: Factors associated with a change in height-for-age z-score (HAZ) over the 6-month period.

Parameters Estimate 95% Confidence Interval p-value
Intercept 1.34 1.04, 1.63 <0.0001
Study time (month) 0.06 0.05, 0.07 <0.0001
Baseline age (month) -0.06 -0.07, -0.05 <0.0001
Baseline HAZ 0.94 0.85, 1.04 <0.0001
Gender
Female Reference
Male -0.02 -0.03, 0.07 0.5248
Parental education
Secondary Reference
High school -0.01 -0.05, 0.07 0.7623
College/University or Higher 0.04 -0.08, 0.07 0.9139

p-value was calculated using Proc mixed procedure, controlling for confounding factors.