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Table 2 Breakdown of research topic area and whether RCT was feasible or not feasible for studies with known outcomes

From: Are some feasibility studies more feasible than others? A review of the outcomes of feasibility studies on the ISRCTN registry

Research topic

Total

(N = 160)

n (% of total)

RCT feasible (n = 133)

n (% of topic)

RCT not feasible (n = 27)

n (% of topic)

Cancer

19 (12)

15 (79)

4 (21)

Circulatory System

19 (12)

19 (100)

0 (0)

Digestive System

4 (3)

3 (75)

1 (25)

Ear, Nose and Throat

0 (0)

0 (0)

0 (0)

Eye Diseases

2 (1)

2 (100)

0 (0)

Genetic Diseases

0 (0)

0 (0)

0 (0)

Infections and Infestations

4 (3)

1 (25)

3 (75)

Injury, Occupational Diseases, Poisoning

2 (1)

0 (0)

2 (100)

Mental and Behavioural Disorders

39 (24)

33 (85)

6 (15)

Musculoskeletal Diseases

7 (4)

5 (71)

2 (29)

Neonatal Diseases

1 (1)

1 (100)

0 (0)

Nervous System Diseases

9 (6)

8 (89)

1 (11)

Not Applicable

8 (5)

5 (63)

3 (38)

Nutritional, Metabolic, Endocrine

15 (9)

13 (87)

2 (13)

Oral Health

1 (1)

1 (100)

0 (0)

Pregnancy and Childbirth

5 (3)

5 (100)

0 (0)

Respiratory

4 (3)

3 (75)

1 (25)

Signs and Symptoms

10 (6)

9 (90)

1 (10)

Skin and Connective Tissue Diseases

1 (1)

1 (100)

0 (0)

Surgery

6 (4)

5 (83)

1 (17)

Urological and Genital Diseases

4 (3)

4 (100)

0 (0)