{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T14:47:55Z","timestamp":1791816475414,"version":"4.3.4"},"reference-count":33,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>The number of crane operators aged 70\u2009years and above is increasing in Singapore, requiring annual relicensing assessments to ensure medical and functional fitness for work.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>To examine the health status, functional capacity and employment outcomes of elderly crane operators and evaluate relicensing effectiveness.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A serial cross-sectional study was conducted using relicensing assessment data from a tertiary healthcare institution in Singapore from 2016 to 2022. Medical history, laboratory test results, functional assessments and employment status were analysed. Chi-square and ANOVA tests were used to compare outcomes across years and between employed and retired operators. Logistic regression was performed to identify factors associated with employment status in 2022.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 456 relicensing assessments were conducted for 195 unique crane operators. Hypertension (61%), diabetes mellitus (29%) and cataracts (25%) were the most common medical conditions. Annual blood tests showed increasing trends in the proportion of operators with abnormal fasting plasma glucose over time (p-trend &amp;lt; 0.05). A longer completion time for the 3D construction test (aOR 1.01, 95% CI 1.00\u20131.02, P\u2009&amp;lt;\u20090.05) was positively associated with retirement but presence of any cardiovascular diseases (aOR 0.51, 95% CI 0.27\u20130.99, P\u2009&amp;lt;\u20090.05) showed an inverse association. Two operators failed the Colour Trails Test-2 and were deemed unfit for relicensing.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The relicensing assessment process identifies crane operators unfit to work due to functional or medical impairments. Cognitive and visuospatial assessments play a key role in determining workability. Findings highlight the need for workplace health programs targeting chronic disease management and cognitive health.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/occmed\/kqag104","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T11:49:18Z","timestamp":1787312958000},"source":"Crossref","is-referenced-by-count":0,"title":["A retrospective review of health profiles and functional capacity of elderly crane operators in Singapore"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1160-4507","authenticated-orcid":false,"given":"D W","family":"Lim","sequence":"first","affiliation":[{"name":"Office of Occupational, Environmental, Health and Safety, Tan Tock Seng Hospital , 308433,","place":["Singapore"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Teo","sequence":"additional","affiliation":[{"name":"Occupational Medicine Services, KK Women\u2019s and Children\u2019s Hospital , 229899,","place":["Singapore"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Y","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Epidemiology, Singapore Clinical Research Institute , 139234,","place":["Singapore"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M L","family":"Chan","sequence":"additional","affiliation":[{"name":"Department of Occupational Therapy, Tan Tock Seng Hospital , 308433,","place":["Singapore"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,10,12]]},"reference":[{"key":"2026101210143498700_kqag104-B1","author":"World Health Organization","year":"2024"},{"key":"2026101210143498700_kqag104-B2","author":"Ministry of Manpower","year":"2025"},{"key":"2026101210143498700_kqag104-B3","doi-asserted-by":"crossref","first-page":"41","DOI":"10.3390\/socsci11020041","article-title":"Relicensing practices of taxi drivers and crane operators aged 70 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