{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:16:09Z","timestamp":1785402969734,"version":"3.56.0"},"reference-count":34,"publisher":"AOSIS","issue":"1","license":[{"start":{"date-parts":[[2025,5,31]],"date-time":"2025-05-31T00:00:00Z","timestamp":1748649600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Background: Early gross motor development is a crucial indicator of overall neurodevelopment. In low- and middle-income countries, lack of accessible assessment tools poses challenges for healthcare professionals evaluating infant neurodevelopment.\n\nObjectives: To determine the agreement between the Alberta Infant Motor Scale (AIMS) and Bayley Scales of Infant Development-III (BSID-III) gross motor domain at 6 months and to evaluate the predictive validity of the AIMS at 6 months for identifying severe gross motor delays at 18 months.\n\nMethod: This nested subgroup study assessed 112 full-term infants using both AIMS and BSID-III at 6 months and BSID-III at 18 months. Agreement between measures was determined using Bland-Altman plots, while predictive validity was evaluated using receiver operating characteristic (ROC) curves with various cut-off scores.\n\nResults: Bland-Altman analysis showed strong agreement between AIMS and BSID-III in the lower-performance range, with bias only in scores above 33. The traditional 10th percentile AIMS cut-off had low sensitivity (27.3%) but high specificity (98%) for predicting delays at 18 months. A modified 23rd percentile cut-off improved sensitivity to 63.6% while maintaining acceptable specificity (81.6%), with a 95.2% negative predictive value (NPV).\n\nConclusion: The AIMS demonstrates strong agreement with BSID-III when identifying potential developmental delays. The proposed 23rd percentile cut-off offers a more balanced screening threshold for this population.\n\nClinical Implications: The AIMS presents a viable alternative to the BSID-III for initial screening in resource-limited settings. The high NPV at the 23rd percentile cut-off makes it useful for ruling out developmental delays.<\/jats:p>","DOI":"10.4102\/sajp.v81i1.2168","type":"journal-article","created":{"date-parts":[[2025,5,31]],"date-time":"2025-05-31T07:08:23Z","timestamp":1748675303000},"update-policy":"https:\/\/doi.org\/10.4102\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Early gross motor development: Agreement between the AIMS and the BSID-III"],"prefix":"10.4102","volume":"81","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6529-5469","authenticated-orcid":false,"given":"Marlette","family":"Burger","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05bk57929","id-type":"ROR","asserted-by":"publisher"}],"name":"Stellenbosch University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0361-3473","authenticated-orcid":false,"given":"Esme R.","family":"Jordaan","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05q60vz69","id-type":"ROR","asserted-by":"publisher"}],"name":"South African Medical Research Council"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9696-5605","authenticated-orcid":false,"given":"Dana","family":"Niehaus","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/05bk57929","id-type":"ROR","asserted-by":"publisher"}],"name":"Stellenbosch University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2580","published-online":{"date-parts":[[2025,5,31]]},"reference":[{"key":"ref0","doi-asserted-by":"crossref","unstructured":"American Psychiatric Association, 2013, DSM-5 diagnostic classification, diagnostic and statistical manual of mental disorders, 5th edn., American Psychiatric Association, Washington, 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