Statistical analysis
Quantitative variables will be expressed as mean
± standard deviation (SD). Qualitative variables will
be presented in both absolute frequencies (number of
patients) and relative frequencies (percentage).Chi-square test and Wilcoxon rank-sum test were
used to compare categorical data and non-parametric
data respectively. The t test was used for analysis
between continuous variables. A statistical adjustment
using binary logistic regression analysis was
performed to analyze factors associated with presence
of CKD. The relevant correlated variables were analyzed
in the logistic regression analysis. All tests were
2-sided, and the level of significance was established
as p < 0.05. Statistical analyses were performed using
the SPSS software package version 17.0 (SPSS Inc,
Chicago, IL).