Statistical analysis
Continuous variables were reported using mean (standard
deviation) and categorical variables were reported using
percentages. For two group comparisons, a student t-test
was used to compare means of continuous variables, and
chi-square tests were used to compare categorical variables.
Logistic regression models were used to examine the
relationship between demographic and other covariates
with problems or complications associated with IUCD.
All analyses were conducted using Stata 10 and 12 (Stata
Corporation, College Station, TX) and SAS (v.9.1.3, SAS
Institute, Cary, NC) with a type 2 error of 0.05.