A research was undeaken by a group of psychiatrists and obstetricians to assess postpaum depression in mothers giving bih to male versus female children according to the Edinburgh depression scale (EPDS). What test should be used to compare the outcomes?
(A) Student's t-test (B) Paired t-test (C) Chi-square test (D) Pearson's correlation coefficient
(C) Answer- C. Chi-square test Chi-square test- Comparison of two independent qualitative variablesA 'non-parametric test' of significanceUsed to 'test significance of association between 2 or more qualitative characteristicsUsed to compare propoions in 2 or more groupsUsed for non-Normal (non-Gaussian) distributions