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Table 3 Total number of patients and endoscopies identified by different data sources

From: Validation of administrative data sources for endoscopy utilization in colorectal cancer diagnosis

Data Source

All Patients

Patients with Endoscopy

Patients without Endoscopy

Total Number of Endoscopies

n (%)

n (%)1

n (%)1

n (%)2

 

1672 (100)

   

Gold Standard

 

1443 (86)

229 (14)

1937 (100)

Chart Review

 

1310 (78)

362 (22)

1506 (78)

Unique3

 

40 (3)

 

205 (11)

Physician Billing

 

1300 (78)

372 (22)

1566 (81)

Unique3

 

24 (2)

 

152 (8)

Unique admin data4

 

91 (7)

 

125 (6)

Hospital Inpatient

 

326 (19)

1346 (81)

354 (18)

Unique3

 

9 (<1)

 

33 (2)

Unique admin data4

 

56 (4)

 

39 (2)

Hospital Outpatient

 

1021 (61)

651 (39)

1126 (58)

Unique3

 

4 (<1)

 

30 (2)

Unique admin data4

 

32 (2)

 

63 (3)

Combined Administrative

1403 (84)

269 (16)

1732 (89)

Unique3

 

133 (9)

 

431 (22)

  1. 1 Percent based on all patients included in the study (n=1443).
  2. 2 Percent based on total number of endoscopies identified in gold standard (n=1937).
  3. 3 Number (percentage) identified in one and only one data source.
  4. 4 Number (percentage) identified in one and only one of the administrative data sources, may also be identified from the chart review.