Map-based tools have recently found their way into health-related research. They can potentially be used to quantify older adults’ life-space. This study aimed to evaluate the validity (vs. GPS) and the test-retest reliability of a map-based life-space assessment (MBA). Life-space of one full week was assessed by GPS and by MBA. MBA was repeated after approximately 3 weeks. Distance-related (mean and maximum distance from home) and area-related (convex hull, standard deviational ellipse) life-space indicators were calculated. Intraclass correlations (MBA vs. GPS and test-retest) were calculated in addition to Bland-Altman analyses (MBA vs. GPS). Fifty-eight older adults (mean age 74, standard deviation 5.5 years; 39.7% women) participated in the study. Bland-Altman analyses showed the highest agreement between methods for the maximum distance from home. Intraclass correlation coefficients ranged between 0.19 (95% confidence interval 0 to 0.47) for convex hull and 0.72 (95% confidence interval 0.52 to 0.84) for maximum distance from home. Intraclass correlation coefficients for test-retest reliability ranged between 0.04 (95% confidence interval 0 to 0.30) for convex hull and 0.43 (95% confidence interval 0.19 to 0.62) for mean distance from home. While acceptable validity and reliability were found for the distance-related life-space parameters, MBA cannot be recommended for the assessment of area-related life-space parameters.

中文翻译：

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基于地图的老年人生活空间评估：有效性和可靠性

基于地图的工具最近已进入与健康相关的研究中。它们可能被用来量化老年人的生活空间。这项研究旨在评估基于地图的生活空间评估（MBA）的有效性（相对于GPS）和重测可靠性。GPS和MBA评估了整整一周的生活空间。大约3周后再次修读MBA。计算了距离相关的（平均和离家的最大距离）和面积相关的（凸包，标准偏差椭圆）生命空间指标。除Bland-Altman分析（MBA与GPS）之外，还计算了类内相关性（MBA与GPS和重测）。58名老年人（平均年龄74岁，标准差5.5岁；女性39.7％）参加了该研究。布兰德·奥尔特曼（Bland-Altman）的分析表明，对于距离家中最大距离的方法之间的一致性最高。类内相关系数的范围在凸包的0.19（95％置信区间0到0.47）和0.72（95％的置信区间0.52到0.84）之间。重测可靠性的类内相关系数在凸包的0.04（95％置信区间0到0.30）和0.43（95％置信区间0.19到0.62）之间。虽然找到了与距离相关的生命空间参数可接受的有效性和可靠性，但不能推荐MBA用于评估与区域相关的生命空间参数。84），以实现离家的最大距离。重测可靠性的类内相关系数在凸包的0.04（95％置信区间0到0.30）和0.43（95％置信区间0.19到0.62）之间。虽然找到了与距离相关的生命空间参数可接受的有效性和可靠性，但不能推荐MBA用于评估与区域相关的生命空间参数。84），以实现离家的最大距离。重测信度的类内相关系数在凸包的0.04（95％置信区间0到0.30）和0.43（95％置信区间0.19到0.62）之间。虽然找到了与距离相关的生命空间参数可接受的有效性和可靠性，但不能推荐MBA用于评估与区域相关的生命空间参数。