{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,6]],"date-time":"2026-06-06T04:12:58Z","timestamp":1780719178441,"version":"3.54.1"},"reference-count":34,"publisher":"BMJ","issue":"6","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["Arch Dis Child"],"published-print":{"date-parts":[[2018,6]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>To estimate prevalence and persistence of 19 common paediatric conditions from infancy to 14\u201315 years.<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Population-based prospective cohort study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>Australia.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>Parallel cohorts assessed biennially from 2004 to 2014 from ages 0\u20131 and 4\u20135 years to 10\u201311 and 14\u201315 years, respectively, in the Longitudinal Study of Australian Children.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main outcome measures<\/jats:title><jats:p>19 health conditions: 17 parent-reported, 2 (overweight\/obesity, obesity) directly assessed. Two general measures: health status, special health care needs. Analysis: (1) prevalence estimated in 2-year age-bands and (2) persistence rates calculated at each subsequent time point for each condition among affected children.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>10 090 children participated in Wave 1 and 6717 in all waves. From age 2, more than 60% of children were experiencing at least one health condition at any age. Distinct prevalence patterns by age-bands comprised eight conditions that steadily rose (overweight\/obesity, obesity, injury, anxiety\/depression, frequent headaches, abdominal pain, autism spectrum disorder, attention-deficit hyperactivity disorder). Six conditions fell with age (eczema, sleep problems, day-wetting, soiling, constipation, recurrent tonsillitis), three remained stable (asthma, diabetes, epilepsy) and two peaked in mid-childhood (dental decay, recurrent ear infections). Conditions were more likely to persist if present for 2\u2009years; persistence was especially high for obesity beyond 6\u20137 (91.3%\u201395.1% persisting at 14\u201315).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Beyond infancy, most Australian children are experiencing at least one ongoing health condition at any given time. This study\u2019s age-specific estimates of prevalence and persistence should assist families and clinicians to plan care. Conditions showing little resolution (obesity, asthma, attention-deficit hyperactivity disorder) require long-term planning and management.<\/jats:p><\/jats:sec>","DOI":"10.1136\/archdischild-2017-313191","type":"journal-article","created":{"date-parts":[[2018,2,16]],"date-time":"2018-02-16T17:15:17Z","timestamp":1518801317000},"page":"548-556","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":28,"title":["Parent-reported prevalence and persistence of 19 common child health conditions"],"prefix":"10.1136","volume":"103","author":[{"given":"Tracy","family":"Liu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raghu","family":"Lingam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kate","family":"Lycett","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fiona K","family":"Mensah","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua","family":"Muller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Harriet","family":"Hiscock","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Md Hamidul","family":"Huque","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melissa","family":"Wake","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2018,2,16]]},"reference":[{"key":"2020050712443567000_103.6.548.1","unstructured":"Seebus I , Eldridge D , Pegrum K , et al . 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