Shen Stephanie, Mackay Sally, Lee Arier, Ni Mhurchu Cliona, Sherif Ahmed, Eyles Helen
Department of Epidemiology and Biostatistics, School of Population Health, The University of Auckland, Auckland, New Zealand.
Department of Pacific Health, School of Population Health, The University of Auckland, Auckland, New Zealand.
Public Health Nutr. 2021 Dec 6;25(5):1-11. doi: 10.1017/S1368980021004705.
To evaluate the impact of the 2017 update to the voluntary Advertising Standards Authority (ASA) code for advertising food on children and young people's exposure to unhealthy food advertisements on New Zealand television.
Audience ratings data were analysed for New Zealand children and young people's television viewing for eight random days prior to (June to August 2015) and following (October to December 2018) the code update, from 06.00 to midnight (864 h). Food advertisements were coded using three nutrient profiling models. The number of children and young people watching television each year was compared.
Three free-to-air New Zealand television channels.
New Zealand children aged 5-18 years.
Television viewer numbers decreased over the 3 years (P < 0·0001). The mean rate of unhealthy food advertising on weekdays was 10·4 advertisements/h (2015) and 9·5 advertisements/h (2018). Corresponding rates for weekend days were 8·1 and 7·3 advertisements/h, respectively. The percentage of food advertisements which were for unhealthy foods remained high (63·7 % on weekdays and 65·9 % on weekends) in 2018. The ASA definition of children's 'peak viewing time' (when 25 % of the audience are children) did not correspond to any broadcast times across weekdays and weekend days.
Between 2015 and 2018, children and young people's television exposure to unhealthy food advertising decreased. However, almost two-thirds of all food advertisements were still unhealthy, and the updated ASA code excluded the times when the greatest number of children was watching television. Consequently, government regulation and regular monitoring should reflect the evolving food marketing environment.
评估2017年自愿性广告标准管理局（ASA）食品广告准则更新对新西兰儿童和青少年接触不健康食品广告的影响。
分析了新西兰儿童和青少年在准则更新前（2015年6月至8月）和更新后（2018年10月至12月）八个随机日的电视收视观众评级数据，时间为06:00至午夜（864小时）。使用三种营养成分分析模型对食品广告进行编码。比较了每年观看电视的儿童和青少年数量。
新西兰三个免费电视频道。
5至18岁的新西兰儿童。
3年间电视观众数量下降（P<0.0001）。工作日不健康食品广告的平均播出率为10.4条/小时（2015年）和9.5条/小时（2018年）。周末相应的播出率分别为8.1条/小时和7.3条/小时。2018年，不健康食品广告在食品广告中所占百分比仍然很高（工作日为63.7%，周末为65.9%）。ASA对儿童“黄金收视时间”（即25%的观众为儿童的时段）的定义与工作日和周末的任何播出时间都不对应。
2015年至2018年期间，儿童和青少年在电视上接触不健康食品广告的情况有所减少。然而，所有食品广告中仍有近三分之二是不健康的，并且更新后的ASA准则排除了儿童观看电视人数最多的时段。因此，政府监管和定期监测应反映不断变化的食品营销环境。
