{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T12:07:38Z","timestamp":1772021258054,"version":"3.50.1"},"reference-count":7,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T00:00:00Z","timestamp":1771977600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"},{"start":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T00:00:00Z","timestamp":1771977600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Surg"],"DOI":"10.1186\/s12893-026-03550-7","type":"journal-article","created":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T11:16:55Z","timestamp":1772018215000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Matters arising: statistical overfitting and outcome discordance undermine the claimed superiority of T2 fusion for shoulder balance in adolescent idiopathic scoliosis"],"prefix":"10.1186","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5499-0152","authenticated-orcid":false,"given":"Audai","family":"Abudayeh","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Iakiv","family":"Fishchenko","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2026,2,25]]},"reference":[{"key":"3550_CR1","doi-asserted-by":"publisher","DOI":"10.1186\/s12893-025-03218-8","volume":"25","author":"C Li","year":"2025","unstructured":"Li C, Wang X, Han B, et al. Shoulder balance in Lenke type 2 adolescent idiopathic scoliosis: the role of upper instrumented vertebrae selection and risk factor analysis. BMC Surg. 2025;25:483. https:\/\/doi.org\/10.1186\/s12893-025-03218-8.","journal-title":"BMC Surg"},{"key":"3550_CR2","first-page":"441","volume":"16","author":"P Peduzzi","year":"1996","unstructured":"Peduzzi P, Concato J, Kemper E, Holford TR, Feinstein AR. A simulation study of the number of events per variable in logistic regression analysis. Med Decis Mak. 1996;16:441\u201358.","journal-title":"Med Decis Mak"},{"key":"3550_CR3","doi-asserted-by":"publisher","first-page":"710","DOI":"10.1093\/aje\/kwk052","volume":"165","author":"E Vittinghoff","year":"2007","unstructured":"Vittinghoff E, McCulloch CE. Relaxing the rule of ten events per variable in logistic and Cox regression. Am J Epidemiol. 2007;165:710\u20138.","journal-title":"Am J Epidemiol"},{"key":"3550_CR4","doi-asserted-by":"publisher","first-page":"m441","DOI":"10.1136\/bmj.m441","volume":"368","author":"RD Riley","year":"2020","unstructured":"Riley RD, Snell KI, Ensor J, Burke DL, Harrell FE Jr, Moons KG, et al. Calculating the sample size required for developing a clinical prediction model. BMJ. 2020;368:m441.","journal-title":"BMJ"},{"key":"3550_CR5","doi-asserted-by":"publisher","DOI":"10.1007\/s43390-025-01148-2","author":"AM Gessara","year":"2025","unstructured":"Gessara AM, Shah S, ElMeshneb M, Gadiya A, Shafafy M, Grevitt M, et al. Does postoperative shoulder imbalance affect patient-reported functional outcomes after posterior surgical correction of adolescent idiopathic scoliosis? A systematic review and meta-analysis. Spine Deform. 2025. https:\/\/doi.org\/10.1007\/s43390-025-01148-2.","journal-title":"Spine Deform"},{"key":"3550_CR6","doi-asserted-by":"publisher","first-page":"358","DOI":"10.1007\/s00586-017-5289-y","volume":"27","author":"S Zhang","year":"2018","unstructured":"Zhang S, Zhang L, Feng X, Yang H. Incidence and risk factors for postoperative shoulder imbalance in scoliosis: a systematic review and meta-analysis. Eur Spine J. 2018;27:358\u201369. https:\/\/doi.org\/10.1007\/s00586-017-5289-y.","journal-title":"Eur Spine J"},{"issue":"17","key":"3550_CR7","doi-asserted-by":"publisher","first-page":"E1031","DOI":"10.1097\/BRS.0000000000003088","volume":"44","author":"JA Sielatycki","year":"2019","unstructured":"Sielatycki JA, Cerpa M, Beauchamp EC, Shimizu T, Wei C, Pongmanee S, et al. The amount of relative curve correction is more important than upper instrumented vertebra selection for ensuring postoperative shoulder balance in Lenke type 1 and type 2 adolescent idiopathic scoliosis. Spine (Phila Pa 1976). 2019;44(17):E1031\u20137. https:\/\/doi.org\/10.1097\/BRS.0000000000003088.","journal-title":"Spine (Phila Pa 1976)"}],"container-title":["BMC Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12893-026-03550-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12893-026-03550-7","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12893-026-03550-7.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T11:16:56Z","timestamp":1772018216000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1186\/s12893-026-03550-7"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,25]]},"references-count":7,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,12]]}},"alternative-id":["3550"],"URL":"https:\/\/doi.org\/10.1186\/s12893-026-03550-7","relation":{},"ISSN":["1471-2482"],"issn-type":[{"value":"1471-2482","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,25]]},"assertion":[{"value":"16 October 2025","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"22 January 2026","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"25 February 2026","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Not applicable.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"163"}}