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Table 1 Summary of clinical trial termination rates within levels of each structured variable

From: Latent Dirichlet Allocation in predicting clinical trial terminations

Characteristic

Level

total_n

Completed

Terminated

Primary Purpose

Missing

29484

0.94

0.06

Primary Purpose

Basic Science

4915

0.94

0.06

Primary Purpose

Device Feasibility

52

0.83

0.17

Primary Purpose

Diagnostic

3858

0.87

0.13

Primary Purpose

Educational/Counseling/Training

118

0.89

0.11

Primary Purpose

Health Services Research

1971

0.96

0.04

Primary Purpose

Other

795

0.91

0.09

Primary Purpose

Prevention

11939

0.93

0.07

Primary Purpose

Screening

723

0.93

0.07

Primary Purpose

Supportive Care

3491

0.91

0.09

Primary Purpose

Treatment

76625

0.88

0.12

Intervention Type

Behavioral

10147

0.97

0.03

Intervention Type

Biological

7770

0.90

0.10

Intervention Type

Combination Product

8

1.00

0.00

Intervention Type

Device

10957

0.88

0.12

Intervention Type

Diagnostic Test

73

0.96

0.04

Intervention Type

Dietary Supplement

3811

0.95

0.05

Intervention Type

Drug

65364

0.88

0.12

Intervention Type

Genetic

500

0.90

0.10

Intervention Type

Other1

11302

0.93

0.07

Intervention Type

Procedure

8908

0.89

0.11

Intervention Type

Radiation

751

0.78

0.22

Study Phase

Early Phase 1

915

0.88

0.12

Study Phase

Missing1

54082

0.93

0.07

Study Phase

Phase 1

17396

0.91

0.09

Study Phase

Phase 1/Phase 2

4432

0.84

0.16

Study Phase

Phase 2

22544

0.85

0.15

Study Phase

Phase 2/Phase 3

2423

0.87

0.13

Study Phase

Phase 3

17992

0.89

0.11

Study Phase

Phase 4

14187

0.90

0.10

Intervention Model

Missing2

27542

0.93

0.07

Intervention Model

Crossover Assignment

11597

0.95

0.05

Intervention Model

Factorial Assignment

1836

0.94

0.06

Intervention Model

Parallel Assignment

61036

0.90

0.10

Intervention Model

Sequential Assignment

49

0.90

0.10

Intervention Model

Single Group Assignment

31911

0.86

0.14

Allocation

Missing3

45626

0.90

0.10

Allocation

Non-Randomized

14325

0.88

0.12

Allocation

Random Sample

40

0.93

0.07

Allocation

Randomized

73980

0.91

0.09

Enrollment Group

> 1000

7151

0.96

0.04

Enrollment Group

0-100

80755

0.87

0.13

Enrollment Group

101-1000

42683

0.94

0.06

Enrollment Group

Missing4

3382

0.95

0.05