Table 3.

Psychological problems reported on three SCL-90-R subscales

Groups	Mean (SD) depressive symptoms (N = 16 items [range 16–80])	Mean (SD) anxiety (N = 10 items [range 10–50])	Mean (SD) sleep problems (N = 3 items [range 3–15])
ICD sample (N = 23)	31.6* (6.2)	17.3* (3.9)	7.6* (1.9)
Reference group (N = 2366)a	21.6 (7.6)	12.8 (4.4)	4.5 (2.2)

* p < 0.001

^aDutch reference group of the SCL-90-R: characteristics of reference group [20]: 50% female, mean age = 41.1, SD = 14.5, age range 17–88 years