Abstract：
BACKGROUND: Preterm children have a higher risk for linguistic delays than full-term infants but are rarely provided with language intervention at an early age. Knowledge on early language interventions targeted to preterm children is scarce, and efficacy of the interventions is rarely reported.
OBJECTIVE: This systematic review aims to identify interventions for preterm children aged 0-3 years with at least one language outcome. Efficacy of the interventions and quality of the study reports were evaluated.
METHODS: The article search was carried out in six databases: EBSCOhost, Scopus, ERIC, LLBA, Ovid, and Web of Science. Effect sizes (Hedges\' g) were calculated for language outcomes. Quality of the study reports was assessed using the levels of evidence system by the American Speech-Language-Hearing Association.
RESULTS: The 28 studies identified were divided into three groups: interventions at Neonatal Intensive Care Unit, interventions during the first year, and interventions during the second and/or third years. Most of the interventions focused on supporting child-care and general development. Of the interventions, 61 % were efficacious in supporting language development of preterm children. The most promising results regarding efficacy were interventions conducted during the second and/or third years (80 %). Quality of the reports varied from high/good (89 %) to low (11 %).
CONCLUSIONS: The 28 existing studies provide limited evidence of the efficacy of very early interventions promoting language development of preterm children. However, especially the results for interventions conducted during the second and/or third years show promise. More studies, particularly language-focused interventions with longer follow-ups, are needed.
OBJECTIVE: This systematic review aims to identify interventions for preterm children aged 0-3 years with at least one language outcome. Efficacy of the interventions and quality of the study reports were evaluated.
METHODS: The article search was carried out in six databases: EBSCOhost, Scopus, ERIC, LLBA, Ovid, and Web of Science. Effect sizes (Hedges\' g) were calculated for language outcomes. Quality of the study reports was assessed using the levels of evidence system by the American Speech-Language-Hearing Association.
RESULTS: The 28 studies identified were divided into three groups: interventions at Neonatal Intensive Care Unit, interventions during the first year, and interventions during the second and/or third years. Most of the interventions focused on supporting child-care and general development. Of the interventions, 61 % were efficacious in supporting language development of preterm children. The most promising results regarding efficacy were interventions conducted during the second and/or third years (80 %). Quality of the reports varied from high/good (89 %) to low (11 %).
CONCLUSIONS: The 28 existing studies provide limited evidence of the efficacy of very early interventions promoting language development of preterm children. However, especially the results for interventions conducted during the second and/or third years show promise. More studies, particularly language-focused interventions with longer follow-ups, are needed.
摘要：
背景：早产儿比足月儿有更高的语言延迟风险，但很少在早期接受语言干预。关于针对早产儿的早期语言干预的知识很少，和疗效的干预措施很少报道。
目的：本系统评价旨在确定对0-3岁早产儿的干预措施，至少有一种语言结果。评估干预措施的有效性和研究报告的质量。
方法：文章搜索在六个数据库中进行：EBSCOhost，Scopus,ERIC,LLBA,奥维德,和WebofScience。计算语言结果的效应大小(Hedges\'g)。研究报告的质量由美国言语-语言-听力协会使用证据系统的水平进行评估。
结果：确定的28项研究分为三组：新生儿重症监护病房的干预措施，第一年的干预措施，以及第二年和/或第三年的干预措施。大多数干预措施侧重于支持儿童保育和一般发展。在干预措施中，61%对支持早产儿的语言发展有效。关于疗效的最有希望的结果是在第二年和/或第三年进行的干预（80％）。报告的质量从高/好(89%)到低(11%)不等。
结论：现有的28项研究对促进早产儿语言发育的早期干预措施的有效性提供了有限的证据。然而,尤其是在第二年和/或第三年进行的干预措施的结果显示了希望.更多研究,特别是以语言为重点的干预措施，随访时间更长，是需要的。
目的：本系统评价旨在确定对0-3岁早产儿的干预措施，至少有一种语言结果。评估干预措施的有效性和研究报告的质量。
方法：文章搜索在六个数据库中进行：EBSCOhost，Scopus,ERIC,LLBA,奥维德,和WebofScience。计算语言结果的效应大小(Hedges\'g)。研究报告的质量由美国言语-语言-听力协会使用证据系统的水平进行评估。
结果：确定的28项研究分为三组：新生儿重症监护病房的干预措施，第一年的干预措施，以及第二年和/或第三年的干预措施。大多数干预措施侧重于支持儿童保育和一般发展。在干预措施中，61%对支持早产儿的语言发展有效。关于疗效的最有希望的结果是在第二年和/或第三年进行的干预（80％）。报告的质量从高/好(89%)到低(11%)不等。
结论：现有的28项研究对促进早产儿语言发育的早期干预措施的有效性提供了有限的证据。然而,尤其是在第二年和/或第三年进行的干预措施的结果显示了希望.更多研究,特别是以语言为重点的干预措施，随访时间更长，是需要的。
