Singapore Eye Research Institute, Singapore National Eye Centre, Singapore.
Duke-NUS Medical School, Singapore.
Transl Vis Sci Technol. 2020 Jun 3;9(7):3. doi: 10.1167/tvst.9.7.3. eCollection 2020 Jun.
Evaluate efficiency, precision, and validity of RetCAT, which comprises ten diabetic retinopathy (DR) quality of life (QoL) computerized adaptive tests (CATs).
In this cross-sectional clinical study, 183 English and/or Mandarin-speaking participants with DR (mean age ± standard deviation [SD] 56.4 ± 11.9 years; 38% proliferative DR [worse eye]) were recruited from retinal clinics in Singapore. Participants answered the RetCAT tests (Symptoms, Activity Limitation, Mobility, Emotional, Health Concerns, Social, Convenience, Economic, Driving, and Lighting), which were capped at seven items each, and other questionnaires, and underwent eye tests. Our primary evaluation focused on RetCAT efficiency (i.e. standard error of measurement [SEM] ± SD achieved and time needed to complete each CAT). Secondary evaluations included an assessment of RetCAT's test precision and validity.
Mean SEM across all RetCAT tests was 0.351, ranging from 0.272 ± 0.130 for Economic to 0.484 ± 0.130 for Emotional. Four tests (Mobility, Social, Convenience, and Driving) had a high level of measurement error. The median time to take each RetCAT test was 1.79 minutes, ranging from 1.12 (IQR [interquartile range] 1.63) for Driving to 3.28 (IQR 2.52) for Activity Limitation. Test precision was highest for participants at the most impaired end of the spectrum. Most RetCAT tests displayed expected correlations with other scales (convergent/divergent validity) and were sensitive to DR and/or vision impairment severity levels (criterion validity).
RetCAT can provide efficient, precise, and valid measurement of DR-related QoL impact. Future application of RetCAT will employ a stopping rule based on SE rather than number of items to ensure that all tests can detect meaningful differences in person abilities. Responsiveness of RetCAT to treatment interventions must also be determined.
RetCAT may be useful for measuring the patient-centered impact of DR severity and disease progression and evaluating the effectiveness of new therapies.
评估包含 10 项糖尿病视网膜病变(DR)生活质量(QoL)计算机化自适应测试(CAT)的 RetCAT 的效率、精度和有效性。
在这项横断面临床研究中,从新加坡的视网膜诊所招募了 183 名讲英语和/或普通话、患有 DR 的参与者(平均年龄±标准差[SD]56.4±11.9 岁;38%为增殖性 DR[更差眼])。参与者回答 RetCAT 测试(症状、活动受限、移动、情绪、健康担忧、社会、便利、经济、驾驶和照明),每个测试均包含七个项目,同时还回答了其他问卷并接受了眼部检查。我们的主要评估重点是 RetCAT 的效率(即测量误差的标准误[SEM]±SD 与完成每个 CAT 所需的时间)。次要评估包括评估 RetCAT 的测试精度和有效性。
所有 RetCAT 测试的平均 SEM 为 0.351,范围为 0.272±0.130(经济)至 0.484±0.130(情绪)。四项测试(移动、社会、便利和驾驶)的测量误差较大。完成每个 RetCAT 测试的中位数时间为 1.79 分钟,范围为 1.12(IQR[四分位间距]1.63)(驾驶)至 3.28(IQR 2.52)(活动受限)。对于频谱最受损端的参与者,测试精度最高。大多数 RetCAT 测试与其他量表呈预期相关性(会聚/发散有效性),并且对 DR 和/或视力损害严重程度敏感(标准有效性)。
RetCAT 可以高效、精确和有效地测量 DR 相关 QoL 影响。未来,RetCAT 的应用将根据 SE 而不是项目数量采用停止规则,以确保所有测试都能检测到个体能力的有意义差异。还必须确定 RetCAT 对治疗干预的反应能力。
评估包含 10 项糖尿病视网膜病变(DR)生活质量(QoL)计算机化自适应测试(CAT)的 RetCAT 的效率、精度和有效性。
本横断面临床研究招募了 183 名讲英语和/或普通话、患有 DR 的参与者(平均年龄±标准差[SD]56.4±11.9 岁;38%为增殖性 DR[更差眼]),这些参与者来自新加坡的视网膜诊所。参与者回答 RetCAT 测试(症状、活动受限、移动、情绪、健康担忧、社会、便利、经济、驾驶和照明),每个测试均包含七个项目,同时还回答了其他问卷并接受了眼部检查。我们的主要评估重点是 RetCAT 的效率(即测量误差的标准误[SEM]±SD 与完成每个 CAT 所需的时间)。次要评估包括评估 RetCAT 的测试精度和有效性。
所有 RetCAT 测试的平均 SEM 为 0.351,范围为 0.272±0.130(经济)至 0.484±0.130(情绪)。四项测试(移动、社会、便利和驾驶)的测量误差较大。完成每个 RetCAT 测试的中位数时间为 1.79 分钟,范围为 1.12(IQR[四分位间距]1.63)(驾驶)至 3.28(IQR 2.52)(活动受限)。对于频谱最受损端的参与者,测试精度最高。大多数 RetCAT 测试与其他量表呈预期相关性(会聚/发散有效性),并且对 DR 和/或视力损害严重程度敏感(标准有效性)。
RetCAT 可以高效、精确和有效地测量 DR 相关 QoL 影响。未来,RetCAT 的应用将根据 SE 而不是项目数量采用停止规则,以确保所有测试都能检测到个体能力的有意义差异。还必须确定 RetCAT 对治疗干预的反应能力。