Before we begin, my knowledge around anything "statistics" related is minimal so any help is appreciated.
I am studying whether performing a surgery at night is safe vs during the day.
I would like to first check whether comparing continuous data (presented as medians) between two groups should be compared with Mann-Whitney U test, and whether categorical data (presented as count or percentage) should be compared with chi-square.
Next, I want to use separate regression analyses to identify independent predictors of an outcome (e.g. surgical complication, length of hospital stay etc). Which regressions do I run for the following:
1 My dependent variable (or outcome) is categorical (yes/no), and my independent variables are categorical or continuous.
2 My dependent variable is continuous, and my independent variables are categorical or continuous.
I also want to report the Odds ratio (and 95% CI) of each predictor on the chosen outcome, to highlight which are most likely to increase/decrease/or have no effect on the outcome.
P.S. I am using SPSS
Thankyou in advance for your help!!!