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. Author manuscript; available in PMC: 2012 Aug 1.
Published in final edited form as: Acta Neurol Scand. 2010 Sep 29;124(2):135–141. doi: 10.1111/j.1600-0404.2010.01436.x

Table 3.

Frequency of mental comorbidities at onset and diagnosis of multiple sclerosis, and mean duration of these diagnoses prior to the onset and diagnosis of multiple sclerosis

Comorbidity Responses to Question, n Affected at onset, n (%) Mean (SD) duration before onset (yrs) Affected at diagnosis, n (%) Mean (SD) duration before diagnosis (yrs)
Depression 8337 613 (7.4) 6.0 (6.6) 1431 (17.2) 6.6 (7.5)
Anxiety 8570 233 (2.7) 5.8 (6.0) 534 (6.2) 6.7 (7.2)
Bipolar disorder 8806 44 (0.5) 7.0 (6.1) 86 (1.0) 9.0 (7.8)
Schizophrenia 8846 5 (0.06) 7.8 (8.8) 7 (0.08) 10.1 (8.0)