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We aimed to estimate the prevalence of apathy in LBD through\u00a0systematic review and meta\u2010analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>Five databases were searched for articles reporting the prevalence of apathy in LBD (dementia with Lewy bodies [DLB] and Parkinson's disease dementia [PDD]) and prodromal\/mild cognitive impairment (MCI) LBD. Linear mixed model random effect meta\u2010analysis was performed to determine the prevalence of apathy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>\n                      Of 7846 articles identified, 49 met inclusion criteria. The average pooled prevalence of apathy was 57% (95% confidence interval [CI] 52%\u201363%,\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u00a0=\u00a085.6%) in DLB, 56% (95% CI 43%\u201370%,\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u00a0=\u00a097.6%) in PDD, 46% (95% CI 32%\u201361%,\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u00a0=\u00a090.6%) in Lewy body\u2010MCI, and 38% (95% CI 25%\u201350%,\n                      <jats:italic>I<\/jats:italic>\n                      <jats:sup>2<\/jats:sup>\n                      \u00a0=\u00a088.1%) in Parkinson's disease\u2010MCI.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>DISCUSSION<\/jats:title>\n                    <jats:p>Apathy affects more than half of individuals with LBD. The high prevalence in prodromal DLB supports the notion that apathy may assist in more timely and accurate diagnosis of DLB.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Highlights<\/jats:title>\n                    <jats:p>\n                      <jats:list list-type=\"bullet\">\n                        <jats:list-item>\n                          <jats:p>Reported apathy prevalence in Lewy body dementia (LBD) varies widely in the existing literature.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>The pooled prevalence of apathy was\u00a0&gt;\u00a050% in LBD and\u00a0&gt;\u00a040% in prodromal disease stages.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Apathy may have utility in earlier, more accurate diagnosis of dementia with Lewy bodies.<\/jats:p>\n        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