Objective To analyze the combined influence of parental screen time and restrictive behaviors on screen time of children and adolescents,and to understand whether decreasing parental screen time combined with restrictive behaviors on screen time of children and adolescents will help control the screen time of children and adolescents within two hours more effectively,so as to provide reference for developing healthy lifestyle. Methods Students aged 6—17 years were selected from 93 schools in 7 provinces and cities in China,with a stratified cluster sampling method. Parental screen time,restrictive behaviors on children′s screen time and children′s screen time were measured by structured questionnaires. A multivariable Logistic regression model was used to analyze the combined influence of parental screen time and restrictive behaviors on screen time of children and adolescents. Results A total of 37 984 students were enrolled into this study with an average age of (10.7±3.2) years old. There were 8 543 students(22.5%) whose daily screen time exceeded 2 hours.Compared with control group,the odds ratio of children′s screen time ＞2 h/d in the group without parental restriction on screen time and parental screen time ＞2 h/d group were 1.25(95%CI: 1.09—1.43,P=0.002) and 1.52(95%CI: 1.44—1.60,P<0.001),respectively. And the odds ratio of children′s screen time ＞2 h/d in the group of parental screen time＞2 h/d without restrictive behaviors on children was 1.93 times higher than that in control group(95%CI: 1.72—2.17,P<0.001). After adjusting for confounding factors such as gender,residence place,age and parental education level with stratified analysis,there was also a consistent result with the overall. Conclusions Parental screen time ＜2 h/d and restrictive behaviors on screen time of children and adolescents are both the protective factors of controlling children′s screen time,and there is a combined influence of the two factors. In order to further reduce the obesity and other health problems of children and adolescents caused by too long screen time,parents should not only limit the children′s screen time,but also need to control their own screen time.
Key words
screen time /
restrictive behaviors /
combined influence /
children and adolescents
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