University of Otago, Wellington, New Zealand.
University of Auckland, Auckland, New Zealand.
Health Promot Int. 2019 Jun 1;34(3):440-446. doi: 10.1093/heapro/dax094.
Wearable cameras have been used to study health behaviours, but their utility in assessing third-party behaviours and the built environment is uncertain. This paper reports on the feasibility of using wearable cameras for this purpose in a study of sun-protective behaviours and shade availability during school lunch-breaks. The Kids'Cam study provided 168 children (aged 11-13 years), recruited from 16 randomly selected schools in the Wellington region of New Zealand, with wearable cameras. The devices automatically captured images every 7 s from the child's perspective. Images captured during school lunch-breaks by a random sample of 15 children who took part during terms 4 and 1 (October 2014-April 2015) were selected and assessed for usability. The feasibility of studying third-party sun-protective behaviours and school shade availability was assessed for a subset of 320 images. Of the 3492 eligible lunch-break images, 96.4% were useable; the remainders were excluded due to obstruction, blurriness or unsuitable camera position. Overall, 1278 children and 108 shade structures were observed in the sample images. The use of shade, hats, sleeves, collars and sunglasses could be determined for 97.0%, 77.2%, 74.4%, 47.6% and 54.9% of children, respectively. All shade structures could be classified according to type, and canopy composition could be assessed for 95.4% of structures. Wearable cameras are a feasible tool for assessing sun-safety, particularly shade availability, hat wearing and shade use. This methodology could be used to objectively study other third-party health-related behaviours, and other features of the built environment.
可穿戴式相机已被用于研究健康行为，但它们在评估第三方行为和建筑环境方面的效用尚不确定。本文报告了可穿戴式相机在评估学校午餐休息时间防晒行为和遮阳可用性研究中的可行性。Kids'Cam 研究为来自新西兰惠灵顿地区 16 所随机选定学校的 168 名（年龄 11-13 岁）儿童配备了可穿戴式相机。这些设备会从儿童视角自动每 7 秒拍摄一张图像。从参与第 4 学期和第 1 学期（2014 年 10 月至 2015 年 4 月）的 15 名随机抽取的儿童拍摄的午餐休息时间图像中选择并评估了样本的可用性。对 320 张图像的子集评估了研究第三方防晒行为和学校遮阳可用性的可行性。在 3492 张符合条件的午休图像中，96.4%是可用的；其余的由于障碍物、模糊或不合适的相机位置而被排除在外。总体而言，在样本图像中观察到 1278 名儿童和 108 个遮阳结构。可以确定 97.0%、77.2%、74.4%、47.6%和 54.9%的儿童使用了遮阳、帽子、袖子、衣领和太阳镜。所有遮阳结构都可以根据类型进行分类，95.4%的结构可以评估树冠组成。可穿戴式相机是评估防晒安全的一种可行工具，特别是遮阳可用性、帽子佩戴和遮阳使用。这种方法可以用于客观地研究其他与第三方健康相关的行为，以及建筑环境的其他特征。
