University of Washington Twin Registry: construction and characteristics of a community-based twin registry

Afari N, Noonan C, Goldberg J, Edwards K, Gadepalli K, Osterman B, Evanoff C, Buchwald D The University of Washington Twin Registry is a community-based registry of twins identified from the Washington State Department of Licensing. A fortuitous quirk in the Washington State drivers’ license and identification number assignment, and collaborative Washington State laws, permitted […]

A twin study of posttraumatic stress disorder symptoms and chronic widespread pain

Arguelles LM, Afari N, Buchwald D, Clauw DJ, Furner S, Goldberg J Previous studies of the association between posttraumatic stress disorder (PTSD) and chronic widespread pain (CWP) or fibromyalgia have not examined the role of familial or genetic factors. The goals of this study were to determine if symptoms of PTSD are related to CWP […]

Is the association between posttraumatic stress disorder symptoms and poor health due to a common familial or genetic factor?

Roy-Byrne P, Noonan C, Afari N, Buchwald D, Goldberg J The objective of this study was to identify genetic, familial and environmental contributions to the association between posttraumatic stress disorder (PTSD) symptoms and poor health. A community sample of 1852 twin pairs was assessed for symptoms of PTSD [with the Impact of Events Scale (IES)] and […]

Genetic and environmental influences on insomnia, daytime sleepiness, and obesity in twins

Watson NF, Goldberg J, Arguelles LM, Buchwald D To better understand the relationships of insomnia, sleepiness, and obesity, investigators conducted a classical twin study utilizing the community-based University of Washington Twin Registry. The dataset was comprised of 1042 monozygotic and 828 dizygotic twin pairs. Twins were, on average, 32 years old; 61% were women, and 19.5% were obese, […]