Question
I have secondary data on doctor mistakes (outcome variable) for all 50 states in USA by doctor specialty. I mean real numbers per state. I
I have secondary data on doctor mistakes (outcome variable) for all 50 states in USA by doctor specialty. I mean real numbers per state. I want to assess the relationship between doctor mistakes (outcome variable) and state of doctor practice (predictor #1) and doctor specialty (Predictor #2) (internist, Surgeon and OBGYN).I want to adjust for the following confounders: provider factor, hospital factor, patient factor and miscellaneous factor. I don't have real data for these 4 confounders.
Hypotheses:
1. no association or interaction between doctor mistake and state of doctor practice
2. no association or interaction between doctor mistake and doctor specialty
I want to do 2-way ANOVA using SPSS and my Excel table currently looks like this (other states not shown here):
State | Doctor Specialty | Doctor Mistake | Doctor Factor | Hospital Factor | Patient Factor | Miscellaneous Factor |
Alabama | Internist | 100 | ||||
Alabama | Surgeon | 345 | ||||
Alabama | OBGYN | 502 | ||||
Alaska | Internist | 270 | ||||
Alaska | Surgeon | 150 | ||||
Alaska | OBGYN | 39 |
Questions:
1. I ran 2-way anova assumptions (homoscedasticity and normality but the output has nothing under F and Sig (it has dots instead). What happened and how do I fix it?
2. I also ran 2-way anova with simulated values for the confounders but the output has nothing under F and Sig (it has dots instead). What happened and how do I fix it?
3. Is the Excel table good for 2-way ANOVA in SPSS or what is the correct format?
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