Table 1 G6PD deficiency and "risk factors". "Risk factors" for G6PD deficiency such as ethnic origin, socio-economic status, migration, and malaria infections, assessed in the questionnaire.

Ethnic origin

Tajik

2/109

1/115

1/53

4/277

Uzbek

0/9

0/14

4/71

4/94

Tajiks reporting haemolysis among relatives

4/109

6/115

3/53

13/27

Uzbeks reporting haemolysis among relatives

0/9

4/13*

2/71

6/93

Socio-economic status

Class I

0/25

0/34

0/25

0/84

Class II

1/14

0/21

1/24

2/59

Class III

0/8

1/26

2/26

3/60

Class IV

0/28

0/30

2/40

2/98

Class V

1/50

0/19

0/10

1/79

Migration

Working abroad

1/15

0/2

0/9

1/26

Never worked abroad

1/104

1/128

5/116

7/348

Originating from the district

1/36

1/121

5/119

7/276

Malaria infections

Previous malaria infection

0/9

0/20

1/47

1/76

Never suffered from malaria before

2/116

1/109

4/77

7/302