Sex differences in sleep quality and psychological distress: Insights from a middle‐aged twin sample from Spain

Autor: Juan J. Madrid‐Valero, Robert M. Kirkpatrick, Francisca González‐Javier, Alice M. Gregory, Juan R. Ordoñana
Přispěvatelé: Universidad de Alicante. Departamento de Psicología de la Salud, Psicología Aplicada a la Salud y Comportamiento Humano (PSYBHE)
Rok vydání: 2022
Předmět:
Zdroj: RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
ISSN: 1365-2869
0962-1105
DOI: 10.1111/jsr.13714
Popis: There is a moderate association between poor sleep and psychological distress. There are marked sex differences in the prevalence of both variables, with females outnumbering males. However, the origin of these sex differences remains unclear. The objectives of this study were to: (1) study genetic and environmental influences on the relationship between poor sleep quality and psychological distress; and (2) test possible sex differences in this relationship. The sample comprised 3544 participants from the Murcia Twin Registry. Univariate and multivariate twin models were fitted to estimate the magnitude of genetic and environmental influences on both individual variance and covariance between poor sleep quality and psychological distress. Sleep quality and psychological distress were measured using the Pittsburgh Sleep Quality Index and the EuroQol five-dimensions questionnaire, respectively. The results reveal a strong genetic association between poor sleep quality and psychological distress, which accounts for 44% (95%CI: 27%–61%) of the association between these two variables. Substantial genetic (rA = 0.50; 95%CI: 0.32, 0.67) and non-shared environmental (rE = 0.41; 95%CI: 0.30, 0.52) correlations were also found, indicating a moderate overlap between genetic (and non-shared environmental) factors influencing both phenotypes. Equating sexes in sex-limitation models did not result in significant decreases in model fit. Despite the remarkable sex differences in the prevalence of both poor sleep quality and psychological distress, there were no sex differences in the genetic and environmental influences on these variables. This suggests that genetic factors play a similar role for men and women in explaining individual differences in both phenotypes and their relationship. Ministerio de Ciencia, Innovación y Universidades, Grant/Award Number: RTI2018-095185-B-I00; European Regional Development Fund.
Databáze: OpenAIRE
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