Lee Paul H, Tse Andy C Y, Wu Cynthia S T, Mak Yim Wah, Lee Uichin
School of Nursing, Hong Kong Polytechnic University, Hong Kong.
Department of Health and Physical Education, Education University of Hong Kong, Hong Kong.
Psychiatry Investig. 2021 Feb;18(2):95-100. doi: 10.30773/pi.2020.0197. Epub 2021 Feb 2.
This study evaluated the validity of self-reported smartphone usage data against objectively-measured smartphone usage data by directly tracking the activities in the participants' smartphone among Chinese adolescents and young adults in Hong Kong.
A total of 187 participants were recruited (mean age 19.4, 71.7% female) between 2017 and 2018. A smartphone usage tracking app was installed on all participants' smartphone for 7 consecutive days. After the 7-day monitoring period, they completed a selfadministered questionnaire on smartphone usage habits.
Although the correlation between self-reported and objectively-measured total smartphone usage time was insignificant (ρ=-0.10, p=0.18), in three out of the four usage domains were positively and significantly correlated, namely social network (ρ=0.21, p=0.005), instant messaging (ρ=0.27, p<0.001), and games (ρ=0.64, p<0.001). Participants' self-report of the total time spent on smartphones exceeded the objective data by around 760 min per week (self-reported 1,930.3 min/wk vs. objectively-measured 1,170.7 min/wk, p<0.001). Most of the over-reporting was contributed by the web browsing domain (self-reported 447.8 min/wk vs. objectively-measured 33.3 min/wk, p<0.001).
Our results showed large discrepancies between self-reported smartphone and objectively-measured smartphone usage except for self-reported usage on game apps.
本研究通过直接追踪香港青少年和青年参与者智能手机中的活动，评估自我报告的智能手机使用数据相对于客观测量的智能手机使用数据的有效性。
在2017年至2018年期间共招募了187名参与者（平均年龄19.4岁，71.7%为女性）。在所有参与者的智能手机上连续7天安装智能手机使用追踪应用程序。在7天的监测期结束后，他们完成了一份关于智能手机使用习惯的自填问卷。
虽然自我报告的和客观测量的智能手机总使用时间之间的相关性不显著（ρ=-0.10，p=0.18），但在四个使用领域中的三个领域存在正相关且显著相关，即社交网络（ρ=0.21，p=0.005）、即时通讯（ρ=0.27，p<0.001）和游戏（ρ=0.64，p<0.001）。参与者自我报告的智能手机总使用时间比客观数据每周多出约760分钟（自我报告为1930.3分钟/周，客观测量为1170.7分钟/周，p<0.001）。大部分多报情况来自网页浏览领域（自我报告为447.8分钟/周，客观测量为33.3分钟/周，p<0.001）。
我们的结果表明，除了游戏应用程序的自我报告使用情况外，自我报告的智能手机使用情况与客观测量的智能手机使用情况之间存在很大差异。
