{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:24:48Z","timestamp":1787027088931,"version":"build-2736575974"},"reference-count":29,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,3,4]],"date-time":"2026-03-04T00:00:00Z","timestamp":1772582400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Pediatr."],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>\n                      <jats:italic>Mycoplasma pneumoniae<\/jats:italic>\n                      pneumonia (MPP) is a prevalent community-acquired pneumonia in children, and severe MPP (SMPP) poses a prominent threat to pediatric health with rapid progression, high complication rates, and increased clinical management burden. Clinically, the capacity to identify children at high risk of SMPP remains inadequate. The aim of this study was to develop and validate a nomogram for predicting SMPP in children with MPP.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      A total of 475 children with MPP admitted to Xuzhou Children\u2019s Hospital from Jan. 2023 to Dec. 2024 were enrolled, meeting specific inclusion\/exclusion criteria. They were categorized into severe MPP (SMPP,\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009151) and non-SMPP (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009324) groups, then randomly split into training (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009332) and validation (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u2009143) cohorts at a 7:3 ratio. Demographic, clinical, laboratory data and derived inflammatory indicators were collected. LASSO and multivariate logistic regression were used to construct a nomogram, with ROC, calibration curves and DCA for evaluation. The study was ethically approved.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Using LASSO and multivariate logistic regression analyses, fever duration (OR\u2009=\u20091.271,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.0001), red blood cell count (OR\u2009=\u20090.300,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.0069) and albumin (OR\u2009=\u20090.795,\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.0002) were identified as independent predictors. The nomogram showed good discrimination (training cohort AUC=0.8574, 95%CI:0.8162\u20130.8986; validation cohort AUC=0.8147, 95%CI:0.7435\u20130.8859). The Hosmer-Lemeshow test yielded\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.551 in the training set and\n                      <jats:italic>P<\/jats:italic>\n                      \u2009=\u20090.553 in the validation set, and calibration curves in both cohorts confirmed excellent model fit, while DCA verified substantial clinical utility, supporting the nomogram\u2019s clinical value in pediatric SMPP prediction\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>We developed and validated a practical, user-friendly nomogram for predicting SMPP in children with MPP, which could facilitate early identification and risk stratification of SMPP.<\/jats:p>\n                  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