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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Med Care. 2014 Nov;52(11):963–968. doi: 10.1097/MLR.0000000000000231

Table 2.

Cancer treatment-related interventions and outcomes by duplicates.

Not receiving any
duplicate scan
(N=33,611)
Receiving at least one
duplicate scan
(N=2,680)
Median(Q1–Q3) time from complete
staging to first duplicate, days
N/A 4(1–14)
Median(Q1–Q3) time from complete
staging to first treatment, days
9(3–20) 17(7–35)
Patients with a clinical evaluation
between complete staging and first
treatment1(%)
26,564(79) 1,930(72)
   Median(Q1–Q3) number of
evaluations
2(2–4) 4(2–6)
Patients visiting the emergency
department between complete
staging and first treatment(%)
3,587(11) 788(29)
   Median(Q1–Q3) number of visits 1(1–1) 1(1–1)
First treatment(%)
   Surgery 32,190(96) 2,383(89)
   Chemotherapy 78(0) 32(1)
   Radiotherapy 99(0) 21(1)
   No cancer-specific therapy 1,244(4) 244(9)
Months of follow-up 1,885,882 119,649
Number of deaths(%) 18,296(54) 1,697(63)
Number of colon cancer deaths(%) 6,596(20) 673(25)
Adjusted rate ratio for all cause mortality Reference 1.22(1.16–1.28)
Adjusted rate ratio for colon cancer mortality Reference 1.23(1.14–1.32)
1

Clinical evaluation consists on any of the following: new outpatient, established outpatient, hospital observation services, new inpatient, established inpatient, observation/inpatient care services, outpatient consultation, inpatient consultation, follow-up inpatient consultation, confirmatory consultation, nursing facility services and team conference.