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. 2013 Jul 26;8(7):e69708. doi: 10.1371/journal.pone.0069708

Table 1. Characteristics of the study sample.

n %
Age group
<20 years 33 8.8
20–34 years 311 82.7
>34 years 32 8.5
Parity
First 156 41.5
Second 112 29.8
Third or more 108 28.7
Ethnicity
Sinhalese 352 93.6
Tamil 3 .8
Moor 21 5.6
Family type
Nuclear 191 50.8
Extended 185 49.2
Main economic activity of the family
Professionals/business/administrative 25 6.6
Other professionals/technical 47 12.5
Security services 102 27.1
Skilled manual workers 121 32.2
Unskilled manual workers 81 21.5
Highest level of education
Up to grade 5 12 3.2
Up to grade 10 170 45.2
Passed O/L 103 27.4
Passed A/L 71 18.9
University degree 18 4.8
Per-capita income
<$1 34 9.0
$1–$2 99 26.3
>$2 224 59.6