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Table 1 Number of studies according to ICD categories

From: The therapeutic effect of clinical trials: understanding placebo response rates in clinical trials – A secondary analysis

ICD-10 Category

Disease category

No of studies

A, B

Infectious and parasitical diseases

4

C

Neoplasms (Tumours)

5

E

Endocrine, nutritional and metabolic diseases

8

 

Psychological and behavioural disorders

 

F0

Organical, including symptomatical psychological disorders

4

F1

Psychol. and behav. disorders due to psychotropic substance abuse

22

F3

Affective disorders

13

F4

Neurotic, stress and somatoform disorders

12

F5

Behav. abnormalities with somatic disorders

5

F6

Personality and behavioural disorders

1

F8

Developmental disorders

1

G

Nervous diseases

14

 

Diseases of circulatory system

 

I10/11

High blood pressure

4

I20-I52

Ischemic and other forms of heart disease

21

I6/7

Cerebrovascular and other peripheral vascular diseases

2

J4

Pulmonary diseases

2

K

Digestive diseases

6

L

Diseases of the skin

1

M

Diseases of the muscular skeletal system and of connective tissue

9

N

Diseases of the urogenital system

3

T8

Trauma, intoxications and other consequences of extraneous causes

2

Y4

Extraneous causes of morbidity and mortality

2

 

Number of all included studies

N = 141