Table 1

Number of studies according to ICD categories

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

Walach et al. BMC Medical Research Methodology 2005 5:26   doi:10.1186/1471-2288-5-26