Statistical analysis:
The collected data were processed and coded before being analyzed using
SPSS program version 23. Quantitative data were presented as minimum,
maximum, mean and SD.
Qualitative data were presented as count and percentage.Student t test
was used to compare quantitative data between two groups and One Way
ANOVA test was used to compare more than two groups.Pearson’s
correlation was used to measure linear relationship between two
continuous variables.ROC curve was used to measure diagnostic validity
of quantitative variables and linear regression test was used to measure
independent effect of some factors on quantitative outcome variable.P
value<0.05 was considered statistically significant.