West Virginia University, Morgantown, West Virginia, USA.
Qual Life Res. 2010 Apr;19(3):413-24. doi: 10.1007/s11136-010-9584-x.
"Healthy days" are calculated by adding the number of poor physical and mental health days and subtracting the total from 30 days using the US Centers for Disease Control and Prevention Health-Related Quality of Life (HRQOL) scale. This study sought to compute the index with forced responses and hypothesized significant HRQOL differences with demographic and risk behavior variables would be observed.
Using the 1997 South Carolina YRBS and a 2007 university data set, variables were created based on the averages within each response option from the index items (e.g., 1-2 days would assigned as 1.5 days, etc.). Then the greater of the two values in each respective cell (poor physical or mental health days) was chosen for the analysis.
Although some differences existed between the two samples, the same general pattern of responses was established. Significant HRQOL differences were observed among selected demographic, substance use, weight perception, and self-rated health variables (P < .05).
Preliminary evidence suggests the "healthy days" calculation is a valid approach with fixed option responses.
“健康天数”的计算方法是，用美国疾病控制与预防中心健康相关生活质量（HRQOL）量表，将身体和精神健康不良天数相加，再从 30 天中减去总数。本研究旨在采用强制应答法计算指数，并假设在人口统计学和风险行为变量方面会观察到显著的 HRQOL 差异。
利用 1997 年南卡罗来纳州青少年风险行为监测系统（YRBS）和 2007 年的大学数据集，根据指数项目中每个应答选项的平均值创建变量（例如，1-2 天被分配为 1.5 天，等等）。然后，在每个相应单元格（身体或精神健康不良天数）中选择两个值中的较大值进行分析。
尽管两个样本之间存在一些差异，但建立了相同的一般应答模式。在选定的人口统计学、物质使用、体重感知和自我评估健康变量方面观察到了显著的 HRQOL 差异（P<0.05）。
初步证据表明，采用固定选项应答的“健康天数”计算方法是一种有效的方法。
