Table 1

Demographic and Clinical Characteristics of Prison Survey Sample

Study sample (n = 315)


(n = 194)



(n = 121)


Men, n (%)

194 (100)

121 (100)

Age, medianb (IQR), y

31.3 (14)

29.4 (12)


Conviction time, medianb (IQR)c, months

69 (66)

60 (54)


aNon-responders were defined as those approached but actively refused to take part, those who consented but not returned questionnaires, and those who returned unanswered questionnaires; bMedians were used as measures of central tendencies as age and conviction time were non-normally distributed; c IQR: Interquartile range; dMann-Whitney U-test was employed due to non-normal distributed data.

Ginsberg et al. BMC Psychiatry 2010 10:112   doi:10.1186/1471-244X-10-112

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