Data Bulletin No. 30
Supplementary Table 2

Adjusted Odds Ratios for Likelihood of Medicare Outpatient Visits to Physicians in Practices with IT to Support Specific Patient Care Functions in 2001


 
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PATIENT CHARACTERISTICS
 
 
 
 
 
Health Status1
 
 
 
 
 
   Healthiest Third2
1.00
1.00
1.00
1.00
1.00
   Middle Third
0.86***
0.97
1.02
1.05
1.01
   Sickest Third
0.90*
0.93
0.98
1.06
1.03
Age
 
 
 
 
 
   <65
0.99
1.01
1.17*
0.86**
1.06
   65-742
1.00
1.00
1.00
1.00
1.00
   75-84
1.01
0.98
0.99
1.01
1.08
   85+
0.91
1.00
0.91*
0.97
1.08
Location of Residence3
 
 
 
 
 
   Urban2
1.00
1.00
1.00
1.00
1.00
   Rural
1.18
1.02
1.46***
1.30*
1.08
Income3          
   Wealthiest Quartile2
1.00
1.00
1.00
1.00
1.00
   3rd Quartile
1.00
0.99
1.12
0.97
1.02
   2nd Quartile
1.10
1.10
1.14
0.99
0.96
   Poorest Quartile
1.03
0.89
1.01
0.89
0.92
Race          
   White2
1.00
1.00
1.00
1.00
1.00
   Black
0.91
0.97
1.07
0.90
1.06
   Other
0.94
1.08
1.13
1.24
1.12
PHYSICIAN CHARACTERISTICS          
Practice Type          
   Solo/Two Physicians
0.54*
0.19***
0.25***
1.07
0.55**
   Small Group (<10)
0.52**
0.24***
0.33***
0.97
0.68
   Medium Group (10 to 49)
0.36***
0.31***
0.34***
0.63
0.54
   Large Group (50+)2
1.00
1.00
1.00
1.00
1.00
   Office Owned by Hospital
0.50**
0.32***
0.27***
0.65
0.55
   Hospital Staff
1.23
1.39
1.54
1.02
1.10
   Medical School
0.76
1.39
1.54
1.02
1.10
   Staff/Group HMO
1.03
0.80
1.50
2.29*
1.73
   Other
0.60*
0.37***
0.56*
1.03
0.53*
Specialty Category          
   Primary Care
0.74**
0.82
0.86
1.36**
1.63*
   Surgical Specialty
0.60***
0.82
1.11
1.44**
0.87
   Medical Specialty2
1.00
1.00
1.00
1.00
1.00
Physician Age          
   Under 35
1.30
1.03
0.94
1.00
1.12
   35-542
1.00
1.00
1.00
1.00
1.00
   55+
0.77*
0.87
0.72**
1.08
0.64*
1 Patient health status as measured by the Klabunde index of relative comorbidity. For details see endnote 2.

2 Reference group.

3 Patient zip code of residence was used to determine urban/rural location and neighborhood income. Urban refers to metropolitan areas defined by the Office of Management and Budget. Income data are from the U.S. Bureau of the Census.

Comparison with reference group is statistically significant at ***p<.001, **p<.01, *p<.05.

Source: Linked data from the Centers for Medicare and Medicaid Services 2001 5 Percent Carrier File and 2001 CTS Physician Survey


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