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Table 1 Socio-demographic characteristics of the sample of N = 4,854. For socio-demographic data, mean ± standard deviation and percentages and absolute numbers (in parenthesis) respectively are reported. P-values refer to differences between ex-combatants, civilian war survivors, and persons without any war experience tested by Kruskal-Wallis1 and chi 2 2.

From: Khat use as risk factor for psychotic disorders: A cross-sectional and case-control study in Somalia

 

Whole group

Ex-combatants

Civilian war survivors

No war experience

p

Total Number

4,854

250

2,667

1,937

-

Male

2,449

240

1,201

1,008

 

Female

2,405

10

1,466

929

< 0.0012

Age

22.2 ± 17.8

42.8 ± 13.5

28.7 ± 16.6

10.7 ± 12.1

< 0.0011

Age range

0 – 102

12 – 102

0 – 101

0 – 90

-

Years of formal education

2.6 ± 4.1

5.2 ± 5.6

3.3 ± 4.3

1.4 ± 3.0

< 0.0011

Economic situation of household*

2.8 ± 1.8

2.5 ± 1.7

2.9 ± 1.7

2.8 ± 1.8

0.0051

Percentage of khat users in week before interview among men > 12 yrs

31.3% (495 of 1,581)

60.3% (144 of 239)

28.1% (306 of 1,090)

17.9% (45 of 252)

< 0.0012

Khat bundles/week before interview among khat chewing men > 12 yrs

7.6 ± 4.4

7.9 ± 4.8

7.6 ± 4.4

6.7 ± 3.2

0.5441

'Screening cases' among men > 12 yrs

8.4% (133 of 1,581)

15.9% (38 of 239)

8.0% (87 of 1,090)

3.2% (8 of 252)

< 0.0012

'Screening cases' among women > 12 yrs

1.9% (30 of 1,600)

20% (1 of 5)

1.6% (22 of 1,372)

2.8% (7 of 248)

0.0662

  1. * The household economic situation was approximated as the sum of four significant assets (water tap, electrical power, TV set, car) and type of housing (hut = 1, house = 2, closed compound = 3). The mean of the two ratings is presented. For the combined rating Cronbach's Alpha = 0.78; correlation with income = 0.73, p < 0.001.