Attention Deficit Hyperactivity Disorder (ADHD) among longer-term prison inmates is a prevalent, persistent and disabling disorder

Table 1 Demographic and Clinical Characteristics of Prison Survey Sample

Study sample (n = 315)	Responders (n = 194)	Non responders ^a (n = 121)	p
Men, n (%)	194 (100)	121 (100)
Age, median ^b (IQR), y	31.3 (14)	29.4 (12)	.028^d
Conviction time, median ^b (IQR) ^c , months	69 (66)	60 (54)	.030^d

^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.

ISSN: 1471-244X