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Table 4 Cases and controls: development sample—diagnoses, treatments, procedures, symptoms at index cancer diagnosis

From: Evaluation of the accuracy of algorithms to identify soft tissue sarcoma (STS) in administrative claims

 

Controls

N = 1,800,079

Cases

N = 10,906

Cancer diagnoses following index

 STS diagnosis, N (%)

11,054 (0.6%)

7590 (69.6%)

 Number of STS diagnoses, mean (SD)

0.0 (0.9)

12.6 (20.0)

 Non-STS cancer diagnosis, N (%)

1593,963 (88.6%)

8115 (74.4%)

 Number of non-STS cancer diagnoses, mean (SD)

14.5 (16.7)

10.5 (15.2)

Treatments

 Any STS NCCN recommended treatment prior to index, N (%)

209,021 (11.6%)

2674 (24.5%)

 Any STS NCCN recommended treatment following index, N (%)

171,301 (9.5%)

2548 (23.4%)

 Days from index diagnosis date to treatment, mean (SD)

32.0 (42.0)

35.1 (43.6)

 Regimen type, among those with treatment, N (%)

  NCCN recommended single agent

163,261 (95.3%)

1154 (45.3%)

  NCCN combination regimen

2819 (1.7%)

1164 (45.7%)

  Not a valid single agent or combination regimen

5221 (3.1%)

230 (9.0%)

Symptoms measured prior to index, N (%)

 Neoplasm of uncertain behavior in skin

117,979 (6.6%)

696 (6.4%)

 Pain in limb

129,494 (7.2%)

1097 (10.1%)

 Localized superficial swelling mass lump

15,017 (0.8%)

967 (8.9%)

Days from symptom to index, mean (SD)

 Neoplasm of uncertain behavior in skin

65.7 (49.7)

84.6 (50.2)

 Pain in limb

76.0 (51.7)

74.6 (54.3)

 Localized superficial swelling mass lump

79.9 (50.5)

89.4 (50.4)

Post diagnosis surgical procedures, N (%)

 Excision surgery

377,857 (21.0%)

2055 (18.8%)

 Resection surgery

194,687 (10.8%)

1189 (10.9%)

 Number of procedures, mean (SD)

  

  Excision surgery

1.4 (0.9)

1.4 (0.9)

  Resection surgery

1.1 (0.4)

1.1 (0.5)

Pre-diagnosis surgical procedures, N (%)

 Excision surgery

485,480 (27.0%)

3552 (32.6%)

 Resection surgery

285,294 (15.9%)

2341 (21.5%)

 Number of procedures, mean (SD)

  Excision surgery

1.4 (0.8)

1.4 (0.8)

  Resection surgery

1.1 (0.4)

1.1 (0.4)

Imaging scans (measured prior to or on index), N (%)

 Computerized tomography scan

1,051,001 (58.4%)

9401 (86.2%)

 Magnetic resonance imaging

445,463 (24.8%)

4785 (43.9%)

 Radiograph

1,135,315 (63.1%)

7797 (71.5%)

 Positron-emission tomography scan

328,534 (18.3%)

3487 (32.0%)

 Number of tests, mean (SD)

  Computerized tomography scan

3.7 (6.4)

4.5 (6.1)

  Magnetic resonance imaging

1.4 (0.9)

1.5 (0.8)

  Radiograph

2.3 (1.9)

2.5 (1.9)

  Positron-emission tomography scan

1.2 (0.4)

1.4 (0.6)

 Number of different scans, mean (SD)

4.1 (5.9)

6.8 (6.6)