For a comparison of the variables, the chi-squared test was used for categorical variables, and the ANOVA test or non-parametric Mann-Whitney test was used for continuous variables, depending on the characteristics of the distribution.
χ test, or Fisher's exact test when sample sizes were smaller than five in one cell, was used for categorical variables, and Student t test was used for continuous variables to compare sociodemographic characteristics, sexual behaviours, substance use, contraceptive use and exposure to sexual and reproductive health education among respondents with and without a history of induced abortion.
Chi-square test or Fisher's exact test was used as appropriate for categorical variables, and Student's t-test was used for continuous variables to compare socio-demographic characteristics, sexual behaviors, HIV testing attitudes, and HIV knowledge among MSM who had and who had not been tested for HIV in the past six months.
Pressure transmitting devices, usually used for continuous aspiration of pleural drainage, have those helpful characteristics.
To evaluate for any significant differences in these characteristics, t-tests were used for continuous variables, and Fisher's exact tests were used for categorical variables.
For sociodemographic baseline characteristics, analysis of variance was used for continuous variables and the chi-squared test for categorical variables.
†For individual characteristics, a Wilcoxon rank-sum test was used for continuous variables.
For comparison of baseline characteristics, the Mann-Whitney U test was used for continuous data and the Pearson χ test was used for categorical data.
†Logistic regression used for dichotomous characteristics (for example, percentage of people with diabetes), and linear regression used for continuous variables (for example, patient's age), treating hospital fifths as continuous variables and controlling for clustering within hospitals.
