Statistical analysis
Regarding descriptive statistics, continuous variables were reported as
the mean and standard deviation, while categorical variables were
reported as frequency and percentage.
A univariate regression analysis was performed to identify the
psychosocial and demographic factors impacting birth weight. A Pearson’s
coefficient correlation was performed for quantitative variables and
birth weight. A multivariable analysis clustered all significant
variables from the previous univariate test and measured their combined
effect on birth weight.
Statistical significance was set at an α error <0.05. All
reported probability values were two-tailed. The SPSS software, IBM SPSS
Statistics for Windows, version 23 (IBM Corp.) was used for statistical
purposes.