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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Med Care. 2013 Apr;51(4):361–367. doi: 10.1097/MLR.0b013e318287d860

Table 4.

Factors associated with agreement of treatment plan and claims for treatment

Systemic therapy only Radiation only Surgery only Watching
ATTRIBUTE CATEGORY N Adjusted PPV* % p-Value N Adjusted PPV* % p-Value N Adjusted PPV* % p-Value N Adjusted PPV* % p-Value
Overall 2,347 62.0 564 66.0 294 45.6 3,686 74.3
Patient Factors
Age <=75 1,452 63.1 0.49 327 65.7 0.94 190 51.0 0.005 2,231 74.0 0.31
>75 895 61.2 237 65.3 104 33.6 1,455 74.7
Performance Status 0 862 58.8 0.03 244 66.0 0.11 153 47.8 0.36 1,690 78.0 <0.0001
1 1,191 64.0 243 62.0 123 43.3 1,607 70.5
>=2 294 65.9 77 74.3 18 29.2 389 72.4
Comorbidity 0 1,189 63.5 0.048 254 65.6 0.97 151 47.6 0.58 1,720 76.9 <0.0001
1 or 2 874 59.4 227 65.3 103 38.5 1,429 73.8
>= 3 284 66.7 83 66.0 40 49.7 537 66.5
Cancer Factors
Type Bladder 261 66.7 <0.0001 71 74.6 0.004 50 44.0 0.035 473 74.0 0.0003
Kidney 222 40.1 48 66.7 51 54.9 529 82.1
Ovarian 811 65.0 46 67.4 87 57.5 804 72.6
Pancreas 265 65.3 48 64.6 33 33.3 368 77.0
Prostate 428 64.7 273 56.0 33 27.3 884 71.9
SCL 226 64.6 65 78.5 15 33.3 308 73.2
Stomach 134 51.5 13 38.5 34 35.3 320 68.2
Stage NED 181 54.9 0.036 95 55.9 0.28 54 47.3 0.52 3,101 75.6 <0.0001
Local 350 59.4 202 67.7 101 49.0 143 72.3
Metastatic 1,816 63.7 267 67.8 139 40.5 442 64.9
Provider Factors
Specialty Medical Onc 1,489 64.9 0.029 149 54.2 <0.0001 127 39.4 0.20 1,796 70.1 <0.0001
Gyn or Gyn Onc 271 62.3 11 57.1 28 33.5 308 77.2
Internal Med 115 55.2 17 34.9 20 43.9 368 76.9
Surgery 40 61.2 13 53.2 38 66.0 116 76.5
Radiation Onc 75 50.8 241 80.9 11 30.2 270 72.9
Urology 76 44.2 41 22.1 27 34.2 280 83.5
Other 357 56.5 133 50.1 65 55.1 548 78.7
Pre-PET Plan Other Imaging 1,104 61.5 0.044 233 58.7 <0.0001 100 46.5 0.011 2,101 74.1 0.0058
Treat 811 65.9 255 74.8 122 52.3 584 69.3
Biopsy 237 58.3 42 58.9 52 32.3 384 77.2
Watch 195 56.7 34 41.2 20 25.1 617 77.5

NED: No evidence of disease or low probability of local recurrence. Gyn: Gynecology. Med: Medicine. Onc: Oncology. SCL: small cell lung

*

PPV: Adjusted estimates of the PPV were provided on the fitted model assuming that the other factors were fixed at their mean or prevalence in the data set.