This is a brief exploration of Christiana Care HCAHPS scores using Chi Squared statistics. It looks at the relationship between various patient characteristics and the response to the question “Would you recommend this hospital?”
Data for the analysis that follows came from HCAHPS survey results received between 10/1/2015 and 12/31/2015.
## Set working directory.
setwd('/Users/mitchellfawcett/Documents/Data Science Projects/Patient Satisfaction')Contingency table:
## ResponseDesc
## GenderID Definitely no Definitely yes Probably no Probably yes
## Male 11 516 8 98
## Female 13 729 24 176Proportions:
## ResponseDesc
## GenderID Definitely no Definitely yes Probably no Probably yes
## Male 0.007 0.328 0.005 0.062
## Female 0.008 0.463 0.015 0.112Chi Squared and p value:
## Number of cases in table: 1575
## Number of factors: 2
## Test for independence of all factors:
## Chisq = 6.437, df = 3, p-value = 0.09218Contingency table:
## ResponseDesc
## MaritalStatus Definitely no Definitely yes Probably no Probably yes
## D 1 101 1 22
## M 11 821 14 159
## P 0 1 1 1
## S 7 148 8 43
## U 0 2 0 2
## W 5 161 8 43
## X 0 11 0 4Proportions:
## ResponseDesc
## MaritalStatus Definitely no Definitely yes Probably no Probably yes
## D 0.001 0.064 0.001 0.014
## M 0.007 0.521 0.009 0.101
## P 0.000 0.001 0.001 0.001
## S 0.004 0.094 0.005 0.027
## U 0.000 0.001 0.000 0.001
## W 0.003 0.102 0.005 0.027
## X 0.000 0.007 0.000 0.003Chi Squared and p value:
## Number of cases in table: 1575
## Number of factors: 2
## Test for independence of all factors:
## Chisq = 43.24, df = 18, p-value = 0.0007393
## Chi-squared approximation may be incorrectContingency table:
## ResponseDesc
## MaritalStatus Definitely no Definitely yes Probably no Probably yes
## OT 13 424 18 115
## M 11 821 14 159Proportions:
## ResponseDesc
## MaritalStatus Definitely no Definitely yes Probably no Probably yes
## OT 0.008 0.269 0.011 0.073
## M 0.007 0.521 0.009 0.101Chi Squared and p value:
## Number of cases in table: 1575
## Number of factors: 2
## Test for independence of all factors:
## Chisq = 15.354, df = 3, p-value = 0.001538Contingency table:
## ResponseDesc
## RaceCode Definitely no Definitely yes Probably no Probably yes
## AS 0 22 0 5
## BL 3 144 1 37
## DE 0 1 0 1
## OT 0 12 0 1
## PI 0 3 0 0
## U 0 1 0 1
## WH 21 1062 31 229Proportions:
## ResponseDesc
## RaceCode Definitely no Definitely yes Probably no Probably yes
## AS 0.000 0.014 0.000 0.003
## BL 0.002 0.091 0.001 0.023
## DE 0.000 0.001 0.000 0.001
## OT 0.000 0.008 0.000 0.001
## PI 0.000 0.002 0.000 0.000
## U 0.000 0.001 0.000 0.001
## WH 0.013 0.674 0.020 0.145Chi Squared and p value:
## Number of cases in table: 1575
## Number of factors: 2
## Test for independence of all factors:
## Chisq = 9.666, df = 18, p-value = 0.9423
## Chi-squared approximation may be incorrectContingency table:
## ResponseDesc
## RaceCode Definitely no Definitely yes Probably no Probably yes
## OT 3 183 1 45
## WH 21 1062 31 229Proportions:
## ResponseDesc
## RaceCode Definitely no Definitely yes Probably no Probably yes
## OT 0.002 0.116 0.001 0.029
## WH 0.013 0.674 0.020 0.145Chi Squared and p value:
## Number of cases in table: 1575
## Number of factors: 2
## Test for independence of all factors:
## Chisq = 4.153, df = 3, p-value = 0.2454
## Chi-squared approximation may be incorrect