Compare categorical data between two time periods?

[Insung Kang]

Hi Statalist, I'd like to kindly ask for your help to find a Stata command to compare these categorical data (hospital visit and frequency) between year 1 and year 1 (e.g., hospital1 vs hospital2). Could you please suggest me proper Stistical model to find the effect and p-value? Thank you so much!

[Insung Kang]

Dataex fixed below:

* Example generated by -dataex-. To install: ssc install dataex
clear
input float participant str3(hospital1 hospital2) str10(frequency1 frequency2)
 1 "yes" "yes" "always"     "always"    
 2 "yes" "yes" "always"     "always"    
 3 "no"  "yes" "never"      "sometimes" 
 4 "no"  "yes" "sometimes"  "frequently"
 5 "no"  "no"  "never"      "sometimes" 
 6 "no"  "no"  "always"     "always"    
 7 "no"  "no"  "frequently" "always"    
 8 "yes" "yes" "always"     "always"    
 9 "no"  "yes" "never"      "sometimes" 
10 "no"  "no"  "sometimes"  "frequently"
end

[Carlo Lazzaro]

Insung:
how can it be that -id10- reports two -no- but is visited in bith hospitals notwithstanding?
Does -frequency1- -frequency2- refer two outpatient visits?

[Insung Kang]

Insung:
how can it be that -id10- reports two -no- but is visited in bith hospitals notwithstanding?
Does -frequency1- -frequency2- refer two outpatient visits?

Thank you for asking Carlo,

Var "hospital" and var "frequency" are independent. "frequency" is actually the frequency of bathroom fan use.

Could you please further give me some advice on which statistical tests are proper?

[Carlo Lazzaro]

Insung:
at a very first sight and assuming that you have many more predictors and controls to be used in your analysis, I would think about -ologit-.

[Insung Kang]

Thank you so much!