Preschool children’s vision screening in New Zealand: a retrospective evaluation of referral accuracy

Objectives: To assess the accuracy of preschool vision screening in a large, ethnically diverse, urban population in South Auckland, New Zealand. Design: Retrospective longitudinal study. Methods: B4 School Check vision screening records (n=5572) were compared with hospital eye department data for children referred from screening due to impaired acuity in one or both eyes who attended a referral appointment (n=556). False positive screens were identified by comparing screening data from the eyes that failed screening with hospital data. Estimation of false negative screening rates relied on data from eyes that passed screening. Data were analysed using logistic regression modelling accounting for the high correlation between results for the two eyes of each child. Primary outcome measure: Positive predictive value of the preschool vision screening programme. Results: Screening produced high numbers of false positive referrals, resulting in poor positive predictive value (PPV=31%, 95...

目标：评估新西兰南奥克兰地区一个大型、种族多样化的城市人群中学前视力筛查的准确性。
设计：回顾性纵向研究。
方法：将B4入学检查（B4 School Check）视力筛查记录（n=5572）与医院眼科数据进行对比，研究对象为因单眼或双眼视力受损而从筛查中被转诊且参加了转诊预约的儿童（n=556）。通过对比筛查未通过眼的筛查数据与医院数据，确定假阳性筛查结果。假阴性筛查率的估算基于筛查通过眼的数据。采用逻辑回归模型分析数据，该模型考虑了每名儿童双眼结果之间的高度相关性。
主要结局指标：学前视力筛查项目的阳性预测值（Positive Predictive Value, PPV）。
结果：筛查产生了大量假阳性转诊，导致阳性预测值较低（PPV=31%，95...