. Author manuscript; available in PMC: 2016 Feb 11.

Published in final edited form as: Clin Exp Rheumatol. 2015 Mar 18;33(1 0 88):S86–S92.

Table V.

Comparison of retrospective reports on (potential) lifetime traumatic events (assessed by the trauma list of the posttraumatic stress syndrome module of the Munich Composite International Diagnostic Interview: frequency ≥10 in at least one group) of age- and sex-matched US and German patients with fibromyalgia syndrome.

	USA n=71	Germany n=71	p-value
Severe physical violence n (%)	10 (14.1)	9 (12.7)	χ2 =0.1; p=0.77
Rape n (%)	12 (16.9)	12 (16.9)	χ² =1.6; p=0.22
Sexual abuse before 14 years n (%)	17 (23.9)	16 (21.3)	χ² =2.0; p=0.69
Severe accident n (%)	21 (29.6)	6 ( 8.4)	χ² =10.8; p=0.001
Witnessed one severe life event n (%)	17 (24.3)	8 (11.3)	χ² =4.2; p=0.04
Other severe life event n (%)	30 (42.9)	22 (31.0)	χ² =2.1; p=0.14
At least one traumatic event n (%)	45 (63.4)	40 (57.1)	χ² =0.6; p=0.75

Significant (Bonferroni adjusted) differences are marked as bold.