Table 1

Composition of the selected rheumatoid arthritis case and control population samples

Ancestry

Sample origin

Number of cases

Number of controls


Caucasian

Greek

37

31

Caucasian

Spanish

141

234

Caucasian

American (Whites)

206

105

Amerindian

North American (Amerinds)

98

78

African-American

North American (Blacks)

46

51

African

San (Bushman)

23

57

Asian

Korean

81

68

Asian

Chinese

21

20

Asian

Javanese

66

72

Slavic

Russian

40

73

Total

759

789


These data were extracted from the 13th International Histocompatibility Working Group rheumatoid arthritis samples and are available on the National Center for Biotechnology Information website [28]. For the sample selection procedure, please refer to the Materials and methods section of this article.

Barnetche et al. Arthritis Research & Therapy 2008 10:R26   doi:10.1186/ar2379

Open Data