Analysis
Descriptive statistics were calculated with the use of standard methods
for means, medians, and proportions. Categorical data were analyzed
using chi-square or Fisher’s exact test where appropriate. Continuous
variables were analyzed using paired or one-sample t-tests where
appropriate. Statistical analysis was performed with Stata software
(version 12; StataCorp, College Station, TX). All analyses were
considered statistically significant at p-values <0.05.