特定领域的过去7天久坐时间问卷的信度和效度
Reliability and validity of a domain-specific last 7-d sedentary time questionnaire.
作者信息
Wijndaele Katrien, DE Bourdeaudhuij Ilse, Godino Job G, Lynch Brigid M, Griffin Simon J, Westgate Kate, Brage Søren
机构信息
1MRC Epidemiology Unit, University of Cambridge, Cambridge, England, UNITED KINGDOM; 2Department of Movement and Sport Sciences, Ghent University, Ghent, BELGIUM; 3Physical Activity Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, AUSTRALIA; 4Melbourne School of Population and Global Health, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, AUSTRALIA.
出版信息
Med Sci Sports Exerc. 2014 Jun;46(6):1248-60. doi: 10.1249/MSS.0000000000000214.
PURPOSE
The objective of this study is to examine test-retest reliability, criterion validity, and absolute agreement of a self-report, last 7-d sedentary behavior questionnaire (SIT-Q-7d), which assesses total daily sedentary time as an aggregate of sitting/lying down in five domains (meals, transportation, occupation, nonoccupational screen time, and other sedentary time). Dutch (DQ) and English (EQ) versions of the questionnaire were examined.
METHODS
Fifty-one Flemish adults (ages 39.4 ± 11.1 yr) wore a thigh accelerometer (activPAL3™) and simultaneously kept a domain log for 7 d. The DQ was subsequently completed twice (median test-retest interval: 3.3 wk). Thigh-acceleration sedentary time was log annotated to create comparable domain-specific and total sedentary time variables. Four hundred two English adults (ages 49.6 ± 7.3 yr) wore a combined accelerometer and HR monitor (Actiheart) for 6 d to objectively measure total sedentary time. The EQ was subsequently completed twice (median test-retest interval: 3.4 wk). In both samples, the questionnaire reference frame overlapped with the criterion measure administration period. All participants had five or more valid days of criterion data, including one or more weekend day.
RESULTS
Test-retest reliability (intraclass correlation coefficient (95% CI)) was fair to good for total sedentary time (DQ: 0.68 (0.50-0.81); EQ: 0.53 (0.44-0.62)) and poor to excellent for domain-specific sedentary time (DQ: from 0.36 (0.10-0.57) (meals) to 0.66 (0.46-0.79) (occupation); EQ: from 0.45 (0.35-0.54) (other sedentary time) to 0.76 (0.71-0.81) (meals)). For criterion validity (Spearman rho), significant correlations were found for total sedentary time (DQ: 0.52; EQ: 0.22; all P <0.001). Compared with domain-specific criterion variables (DQ), modest-to-strong correlations were found for domain-specific sedentary time (from 0.21 (meals) to 0.76 (P < 0.001) (screen time)). The questionnaire generally overestimated sedentary time compared with criterion measures.
CONCLUSION
The SIT-Q-7d appears to be a useful tool for ranking individuals in large-scale observational studies examining total and domain-specific sitting.
目的
本研究的目的是检验一份自我报告的过去7天久坐行为问卷（SIT-Q-7d）的重测信度、效标效度和绝对一致性，该问卷将每日总久坐时间评估为五个领域（用餐、交通、职业、非职业屏幕时间和其他久坐时间）的坐/躺时间总和。对该问卷的荷兰语（DQ）和英语（EQ）版本进行了检验。
方法
51名弗拉芒成年人（年龄39.4±11.1岁）佩戴大腿加速度计（activPAL3™），并同时记录7天的领域日志。随后，参与者两次完成DQ（重测间隔中位数：3.3周）。对大腿加速度计记录的久坐时间进行对数标注，以创建可比的特定领域和总久坐时间变量。402名英国成年人（年龄49.6±7.3岁）佩戴加速度计和心率监测器组合（Actiheart）6天，以客观测量总久坐时间。随后，参与者两次完成EQ（重测间隔中位数：3.4周）。在两个样本中，问卷参考期与效标测量管理期重叠。所有参与者均有5个或更多有效的效标数据日，包括1个或更多周末日。
结果
总久坐时间的重测信度（组内相关系数（95%CI））为中等至良好（DQ：0.68（0.50 - 0.81）；EQ：0.53（0.44 - 0.62）），特定领域久坐时间的重测信度为差至优秀（DQ：从0.36（0.10 - 0.57）（用餐）到0.66（0.46 - 0.79）（职业）；EQ：从0.45（0.35 - 0.54）（其他久坐时间）到0.76（0.71 - 0.81）（用餐））。对于效标效度（斯皮尔曼rho系数），总久坐时间存在显著相关性（DQ：0.52；EQ：0.22；所有P<0.001）。与特定领域的效标变量（DQ）相比，特定领域久坐时间存在中等至强的相关性（从0.21（用餐）到0.76（P<0.001）（屏幕时间））。与效标测量相比，该问卷通常高估了久坐时间。
结论
在大规模观察性研究中，SIT-Q-7d似乎是用于对个体的总久坐时间和特定领域久坐时间进行排名的有用工具。
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