Alternative Risk-Adjustment Approaches to Assessing the Quality of Home Health Care: Final Report. TABLE 6a: Summary of Regression Models: Activities of Daily Living

07/01/2006

TABLE 6a. Summary of Regression Models: Activities of Daily Living
  Risk-Adjusted in OBQI or HHQI University of Colorado Model Model 1 Clinical Core (Baseline Model) Model 2 Adds Outcome-Specific Model 3 Adds OASIS “Prior” Items
IMPROVEMENT IN BATHING Yes  
Percent Who Could Improve: 62.2%
Percent Improving Among Those Who Could: 57.0%
Number of OASIS Items   52 41 43 44a
Number of OASIS Elements   72 59 63 64
R2 statistic   0.192 0.167 0.172 0.190
c statistic   0.755 0.738 0.741 0.753
IMPROVEMENT IN GROOMING Yes  
Percent Who Could Improve: 34.6%
Percent Improving Among Those Who Could: 61.4%
Number of OASIS Items   68 41 43 44b
Number of OASIS Elements   95 59 63 64
R2 statistic   0.238 0.200 0.201 0.220
c statistic   0.784 0.760 0.761 0.774
IMPROVEMENT IN DRESSING UPPER BODY Yes  
Percent Who Could Improve: 40.1%
Percent Improving Among Those Who Could: 61.4%
Number of OASIS Items   69 41 43 44c
Number of OASIS Elements   98 59 63 64
R2 statistic   0.233 0.193 0.194 0.215
c statistic   0.780 0.755 0.756 0.770
IMPROVEMENT IN DRESSING LOWER BODY Yes  
Percent Who Could Improve: 46.6%
Percent Improving Among Those Who Could: 60.1%
Number of OASIS Items   54 41 43 44d
Number of OASIS Elements   71 59 63 64
R2 statistic   0.210 0.182 0.182 0.201
c statistic   0.763 0.744 0.745 0.758
IMPROVEMENT IN TOILETING Yes  
Percent Who Could Improve: 24.5%
Percent Improving Among Those Who Could: 59.7%
Number of OASIS Items   43 41 43 44e
Number of OASIS Elements   59 59 63 64
R2 statistic   0.267 0.224 0.226 0.245
c statistic   0.800 0.775 0.775 0.787
IMPROVEMENT IN TRANSFERRING Yes  
Percent Who Could Improve: 46.3%
Percent Improving Among Those Who Could: 49.8%
Number of OASIS Items   60 41 43 44f
Number of OASIS Elements   87 59 63 64
R2 statistic   0.137 0.102 0.112 0.129
c statistic   0.711 0.681 0.690 0.705
IMPROVEMENT IN EATING Yes  
Percent Who Could Improve: 21.6%
Percent Improving Among Those Who Could: 53.3%
Number of OASIS Items   42 41 43 44g
Number of OASIS Elements   60 59 63 64
R2 statistic   0.176 0.150 0.150 0.167
c statistic   0.742 0.723 0.724 0.737
IMPROVEMENT IN AMBULATION Yes  
Percent Who Could Improve: 59.9%
Percent Improving Among Those Who Could: 34.1%
Number of OASIS Items   38 41 43 44h
Number of OASIS Elements   53 59 63 64
R2 statistic   0.180 0.213 0.222 0.244
c statistic   0.755 0.768 0.775 0.788
STABILIZATION IN BATHING Yes  
Percent Who Could Stabilize: 66.4%
Percent Stabilized Among Those Who Could: 90.4%
Number of OASIS Items   42 41 43 44a
Number of OASIS Elements   55 59 63 64
R2 statistic   0.114 0.098 0.104 0.105
c statistic   0.786 0.772 0.776 0.778
STABILIZATION IN GROOMING Yes  
Percent Who Could Stabilize: 65.4%
Percent Stabilized Among Those Who Could: 93.2%
Number of OASIS Items   44 41 43 44b
Number of OASIS Elements   64 59 63 64
R2 statistic   0.113 0.096 0.096 0.097
c statistic   0.804 0.784 0.784 0.786
STABILIZATION IN TRANSFERRING Yes  
Percent Who Could Stabilize: 69.2%
Percent Stabilized Among Those Who Could: 93.7%
Number of OASIS Items   48 41 43 44f
Number of OASIS Elements   70 59 63 64
R2 statistic   0.118 0.088 0.103 0.104
c statistic   0.846 0.815 0.836 0.836
NOTES: “Percent Who Could Improve” calculated using all home health episodes, not just those discharged to the community. The smallest sample size for the ADL risk-adjustment models is 54,030. Shading indicates that U of CO model statistics are for multiple sub-models; we report the number of unique OASIS items and elements across all sub-models.
  1. Risk-adjustment model includes help required with bathing prior to home health admission.
  2. Risk-adjustment model includes help required with grooming prior to home health admission.
  3. Risk-adjustment model includes help required with dressing upper body prior to home health admission.
  4. Risk-adjustment model includes help required with dressing lower body prior to home health admission.
  5. Risk-adjustment model includes help required with using the toilet prior to home health admission.
  6. Risk-adjustment model includes help required with transferring prior to home health admission.
  7. Risk-adjustment model includes help required with eating prior to home health admission.
  8. Risk-adjustment model includes help required with ambulating prior to home health admission.

 

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