The Swedish National Cataract Register (NCR) collects data on cataract surgery outcomes during March, including patient-reported outcomes using the Catquest-9SF questionnaire for over 11 years. Previous studies from NCR have shown that the preoperative visual acuity has improved over time. The main purpose of this study was to evaluate the Catquest-9SF Rasch scoring performance in this changing environment. A second purpose was to describe clinical data over the same period for those who completed the questionnaire. The performance of the Catquest-9SF was analysed by a separate Rasch analysis for each year, resulting in a preoperative and postoperative score for each participating patient in the annual cohorts. The clinical data and questionnaire scoring were analysed for each year in the period 2008–2018 inclusive. Data were available for 42,023 eyes for 11 annual cohorts (2008–2018). The psychometric properties of the questionnaire were stable during the study period. Person separation (precision) for the whole period was 2.58 and varied between 2.45 and 2.72. The person reliability was 0.87 and varied between 0.86 and 0.88. The targeting of question difficulty to person ability became less accurate over time meaning that the item activities became easier to carry out without difficulty. The average targeting for the whole period was −2.06 and changed from −1.92 in 2008 to −2.31 in 2018. The person score improved both before surgery and after surgery, indicating that patients are undergoing surgery at a more able level and getting better outcomes. The average improvement by surgery decreased from 3.41 logits in 2008 to 3.21 logits in 2018 (p = 0.003). Over time, patient age decreased from 75 to 74 years (p < 0.001) and the proportion of women decreased from 63.9 to 57.9% (p < 0.001). The mean preoperative visual acuity in both the operated eye and the better eye improved over time (0.47 to 0.40 logMAR, p < 0.001 and 0.22 to 0.19 logMAR, p < 0.001, respectively), as did the mean postoperative visual acuity in the operated eye (0.14 to 0.09 logMAR, p < 0.001). The Catquest-9SF retained stable psychometric properties over this 11-year period although more recent cohorts included slightly younger patients with somewhat better vision.

中文翻译：

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Catquest-9SF运作了十多年-瑞典国家白内障登记簿进行的一项研究

瑞典国家白内障登记处（NCR）在3月期间收集有关白内障手术结局的数据，包括使用Catquest-9SF问卷调查超过11年的患者报告结局。NCR先前的研究表明，术前视力随着时间的推移有所改善。这项研究的主要目的是评估在不断变化的环境中Catquest-9SF Rasch的得分表现。第二个目的是描述完成调查表的人同期的临床数据。每年通过单独的Rasch分析来分析Catquest-9SF的性能，从而得出年度队列中每个参与患者的术前和术后得分。在2008-2018年期间（​​包括该年），每年对临床数据和问卷评分进行分析。有42个可用数据 023眼针对11个年度队列（2008-2018年）。在研究期间，问卷的心理测量特性稳定。整个期间的人分离度（精确度）为2.58，在2.45和2.72之间变化。人的信度为0.87，在0.86和0.88之间变化。随着时间的推移，将问题难度针对人的能力的定位变得越来越不准确，这意味着项目活动变得更加容易且没有困难。整个期间的平均目标为-2.06，从2008年的-1.92变为2018年的-2.31。人员得分在手术前和手术后均得到改善，表明患者接受手术的能力更高，并且获得了更好的结局。手术的平均改善率从2008年的3.41个对数减少到2018年的3.21个对数（p = 0.003）。随着时间的推移，患者年龄从75岁降至74岁（p <0.001），女性比例从63.9％降至57.9％（p <0.001）。手术后眼睛和更好的眼睛的平均术前视力均随时间而改善（分别为0.47至0.40 logMAR，p <0.001和0.22至0.19 logMAR，p <0.001），以及手术后眼球的平均术后视力（0.14至0.09 logMAR，p <0.001）。Catquest-9SF在这11年间保持了稳定的心理测量特性，尽管最近的队列研究包括了视力稍佳的年轻患者。分别为p <0.001）和手术后眼睛的平均术后视敏度（0.14-0.09 logMAR，p <0.001）。Catquest-9SF在这11年期间保持了稳定的心理测量特性，尽管最近的队列研究包括年龄稍稍好些的年轻患者。分别为p <0.001）和手术后眼睛的平均术后视敏度（0.14-0.09 logMAR，p <0.001）。Catquest-9SF在这11年间保持了稳定的心理测量特性，尽管最近的队列研究包括了视力稍佳的年轻患者。