Division of General Pediatrics, University of California at San Francisco, San Francisco, CA, USA.
J Sleep Res. 2014 Jun;23(3):326-34. doi: 10.1111/jsr.12114. Epub 2013 Dec 16.
We know of no studies comparing parent-reported sleep with accelerometer-estimated sleep in their relation to paediatric adiposity. We examined: (i) the reliability of mother-reported sleep compared with accelerometer-estimated sleep; and (ii) the relationship between both sleep measures and child adiposity. The current cross-sectional study included 303 Mexican American mother-child pairs recruited from Kaiser Permanente Northern California. We measured sleep duration using maternal report and accelerometry and child anthropometrics. Concordance between sleep measures was evaluated using the Bland-Altman method. We conducted zero-ordered correlations between mother-reported sleep, accelerometer-estimated sleep and child BMI z-scores (BMIz). Using linear regression, we examined three models to assess child BMIz with mother-reported sleep (model 1), accelerometer-estimated sleep (model 2) and both sleep measures (model 3). Children had an average age of 8.86 years (SD = 0.82). Mothers reported that their child slept 9.81 ± 0.74 h [95% confidence interval (CI): 9.72, 9.89], compared to 9.58 ± 0.71 h (95% CI: 9.50, 9.66) based on accelerometry. Mother-reported sleep and accelerometer-estimated sleep were correlated (r = 0.33, P < 0.001). BMIz outcomes were associated negatively with mother-reported sleep duration (model 1: β = -0.13; P = 0.02) and accelerometer-estimated sleep duration (model 2: β = -0.17; P < 0.01). Accounting for both sleep measures, only accelerometer-measured sleep was related to BMIz (model 3: β = -0.14, P = 0.02). Each sleep measure was related significantly to adiposity, independent of covariates. Accelerometry appeared to be a more reliable measure of children's sleep than maternal report, yet maternal report may be sufficient to examine the sleep-adiposity relationship when resources are limited.
我们不知道有任何研究将父母报告的睡眠与加速度计估计的睡眠进行比较，以了解它们与儿科肥胖的关系。我们检查了：（i）与加速度计估计的睡眠相比，母亲报告的睡眠的可靠性；以及（ii）这两种睡眠测量方法与儿童肥胖之间的关系。这项横断面研究纳入了 303 对来自 Kaiser Permanente Northern California 的墨西哥裔美国母子。我们使用母亲报告和加速度计以及儿童人体测量学来测量睡眠持续时间。使用 Bland-Altman 方法评估睡眠测量的一致性。我们对母亲报告的睡眠、加速度计估计的睡眠与儿童 BMI z 分数（BMIz）之间进行了零阶相关分析。使用线性回归，我们检查了三个模型，以评估母亲报告的睡眠（模型 1）、加速度计估计的睡眠（模型 2）和两种睡眠测量（模型 3）与儿童 BMIz 的关系。儿童的平均年龄为 8.86 岁（标准差=0.82）。母亲报告说，他们的孩子睡了 9.81±0.74 小时[95%置信区间（CI）：9.72，9.89]，而根据加速度计，孩子睡了 9.58±0.71 小时（95%CI：9.50，9.66）。母亲报告的睡眠和加速度计估计的睡眠相关（r=0.33，P<0.001）。BMIz 结果与母亲报告的睡眠持续时间呈负相关（模型 1：β=-0.13；P=0.02）和加速度计估计的睡眠持续时间（模型 2：β=-0.17；P<0.01）。考虑到两种睡眠测量方法，只有加速度计测量的睡眠与 BMIz 相关（模型 3：β=-0.14，P=0.02）。在控制了两种睡眠测量方法后，只有加速度计测量的睡眠与 BMIz 显著相关（模型 3：β=-0.14，P=0.02）。每个睡眠测量方法与肥胖相关，独立于协变量。与母亲报告相比，加速度计似乎是一种更可靠的儿童睡眠测量方法，但当资源有限时，母亲报告可能足以检查睡眠与肥胖的关系。
