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Actigraphs were used to objectively measure sleep across 7\u00a0days and nights. Participants also completed a sleep diary over the same period, and the Pittsburgh Sleep Quality Index (PSQI).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The mean correlation between the objective and subjective sleep measures was lower for the KS sample (\n                      <jats:italic>M r<\/jats:italic>\n                      \u2009=\u2009.15) than for controls (\n                      <jats:italic>M r<\/jats:italic>\n                      \u2009=\u2009.34). Sleep disturbance was significantly larger in the KS sample, as measured by actigraphy (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u2009.022,\n                      <jats:italic>d<\/jats:italic>\n                      \u2009=\u20090.71) and the PSQI (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u2009.037,\n                      <jats:italic>d<\/jats:italic>\n                      \u2009=\u20090.61). In regression models predicting sleep domains from KS status, age, educational level, vocational status, IQ, and mental health, KS status was not a significant predictor. Higher age was associated with more actigraphy-measured sleep disturbance. Higher educational level and being employed were associated with better sleep efficiency.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Sleep disturbance may be a particular problem for men with KS and should be measured with complimentary methods.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13023-023-02822-2","type":"journal-article","created":{"date-parts":[[2023,9,1]],"date-time":"2023-09-01T07:04:42Z","timestamp":1693551882000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Subjective versus objective sleep in men with Klinefelter syndrome"],"prefix":"10.1186","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7501-0033","authenticated-orcid":false,"given":"K. 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