Diary days needed to estimate activity among older African-American and Hispanic women
Diary days needed to estimate activity among older African-American and Hispanic women
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DOI：
10.1097/00005768-200208000-00012
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发表时间：
2002-08-01
期刊：
影响因子：
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通讯作者：
Tortolero, SR
中科院分区：
文献类型：
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作者：
Eason, KE;Mâsse, LC;Tortolero, SR
目的：本研究的目的是估计老年非裔美国和西班牙裔女性工人和非工人的能量消耗变化，并确定可靠估计活动所需的日记自我报告天数。方法：来自“流动女性”研究的 227 名女性（11 名非裔美国人，116 名西班牙裔）完成了 7 天的日记，并用于本研究的分析（平均年龄 49.3 岁，SD = 7.0；平均体重 77.0 kg，SD = 17.6 kg；平均 BMI 30，SD = 6.5）。计算每个受试者每天的总活动和特定活动类型的千卡并用于普遍性分析。结果：结果表明，非洲裔美国非工人需要 11 天的活动才能可靠估计总活动，西班牙裔非工人需要 8 天的活动。对于工人来说，非洲裔美国人需要 12 天的活动才能可靠地估计总活动量，西班牙裔则需要 14 天的活动。非裔美国人按活动类型要求的日记自我报告天数范围为，非工作人员为 6 至 48 天，工作人员为 6 至 30 天。对于西班牙裔美国人来说，按活动类型要求的日记自我报告天数范围为：非工作人员为 8 至 11 天，工作人员为 7 至 42 天。结论：本研究的结果表明，需要 7 天以上的日记自我报告才能对老年非裔美国和西班牙裔女性的总活动量进行可靠的估计。研究还发现，某些类型的活动可以在 7 天内得到可靠的估计。然而，当测量/行为的变化较小时，预计可靠性会较低，并且需要更多的测量天数才能达到所需的可靠性水平。
Purpose: The purpose of this study was to estimate variation in energy expenditure among older African-American and Hispanic female workers and nonworkers, and identify the number of days of diary self-report necessary to reliably estimate activity. Methods: 227 women (11 I African-American, 116 Hispanic) from the Women On The Move study completed a 7-d diary and were used in the analysis for this study (mean age 49.3 yr, SD = 7.0; mean weight 77.0 kg, SD = 17.6 kg; mean BMI 30, SD = 6.5). Kcal per day for total activity and specific types of activity were calculated for each subject and used in generalizability analyses. Results: Results indicated that 11 d of activity are needed to reliably estimate total activity for African-American nonworkers and 8 d for Hispanic nonworkers. For workers, 12 d of activity are needed to reliably estimate total activity for African-Americans and 14 d are required for Hispanics. Days of diary self-report required by activity type for African-Americans range from 6 to 48 for nonworkers and from 6 to 30 for workers. For Hispanics, days of diary self-report required by activity type range from 8 to I 11 for nonworkers and 7 to 42 for workers. Conclusions: The results of this study indicate the need for more than 7 d of diary self-report to achieve reliable estimates of total activity in older African-American and Hispanic women. The study also found that certain types of activity could be reliably estimated in less than 7 d. However, when there is less variability in the measure/behavior, the reliability is expected to be less and more measurement days are needed to achieve a desired level of reliability.