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Table 5 Patient characteristics of those who had an endoscopy prior to colorectal cancer diagnosis compared to those who did not in the Gold Standard dataset

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

Characteristics Did not have endoscopy n (%) Had endoscopy n (%) Pvalue
Total Number 229 (100) 1443 (100)  
Age at diagnosis    0.24
Mean [Median] 70 [72] 68 [69]  
<=65 84 (37) 559 (39)  
66-74 53 (23) 384 (26)  
>=75 92 (40) 500 (35)  
Stage at diagnosis    <.0001
I-III 110 (48) 1035 (72)  
IV or Unknown 119 (52) 408 (28)  
Type of 1 st colorectal cancer-related visit 1    <.0001
Late2 event 104 (45) 402 (28)  
(Pre)Diagnostic event 125 (55) 1041 (72)  
Time from diagnosis to death (days) 3    <.0001
Mean [Median] 467 [200] 771 [546]  
<= 1 month 41 (24) 43 (6)  
1 - 3 months 20 (11) 70 (10)  
>= 3 months 111 (64) 599 (84)  
  1. 1 Limited to healthcare visits within 1 year prior to diagnosis of colorectal cancer.
  2. 2 Late event is defined as a visit that included treatment-related events (e.g., surgery, palliative care) rather than diagnostic or pre-diagnostic events (e.g., radiology, symptoms). Patients who did not have any colorectal cancer-related healthcare visits are also included in this group.
  3. 3 Includes only patients who died on or before March 31, 2009.