BackgroundWHO put air pollution is one of the largest environmental risks, but people are more concerned about Outdoor Air Quality (OAQ) but little about Indoor Air Quality (IAQ). People’s indoor activities accounts 70% to 90% time of a day. Children may stay longer. This survey is to learn Chinese families perspectives on IAQ, identify knowledge and behaviour gap and collect insights on IAQ promotion.Methods10 cities were selected based on geography and year average PM2.5. 100 school-aged children’s families participated the survey in each city. Data from 1000 school-aged children was collected through school teachers. Children marked their choices on the questionnaire sheets while teacher reading the questions and choices. Data from 1000 parents was collected online. Parents got an survey invitation with online survey links, they completed the online survey and returned a signed feedback slip to school teacher.Results80% of the families consider OAQ as “worse”. A limited knowledge of PM 2.5 and its impact, such as 31% of kids have NEVER heard about the word PM 2.5 and 54% of parent do not know the “safety level” of indoor PM 2.5 by WHO. Chemicals, bacteria and viruses are the most concerned ingredients on IAQ at home. An obvious gap between knowing and doing, such as smoking was rated as No. 1 bad for IAQ at home (72%), but 58% of the parents were observed smoking at home. High consensus on improving IAQ at home with 87% families supporting actions on No Smoking, Ventilation, Green-materials for decoration and More greenery.ConclusionsThe awareness on IAQ low while the need on IAQ is high. An obvious gap between knowing and doing on smoking at home. Great opportunities to conduct IAQ at home with majority families’ support especially actions on No Smoking, Ventilation, Green-materials for decoration and more Greenery.

BackgroundRoad traffic accidents is the first killer to teens aged 15–17 worldwide. In China, the same trend happens on teens. They are the group walking independently on the one hand, they are the group with the highest increasing rate on web-surfacing through mobile phone on the other hand. This research presented the results through observation, group discussion and questionnaire on teens distracted walking by e-devices in Shanghai, which is the first of its kind in China.Methods8250 observations of teens in 8 communities in fall 2014 and spring 2015 were recorded. Observers conducted two morning and afternoon sessions at cross roads, on different days but at the same time, on regular school days in good weather. Each observer focused on one crossing location. 8 focus group discussions were conducted among 176 teens and 1000 questionnaires were completed by teens in 8 communities.Results50% of teens reported use of e-devices while walking in the questionnaire. Reported by observers at cross roads, 240 out of 8250 teens were observed distraction by e-devices while crossing in a quick traffic flow with a car passing by every 2.7 seconds. The distraction rate in the afternoon is 1.9 times vs morning. The most frequent forms of distraction were headphones 42.5%, texting 22.5%, game 15.8%, and talking on the phones (10.4%). During focus groups, 86.6% of teens perceived either senior or junior groups at greater risk. Safety talks on walking with e-devices with parents is in need among teens.ConclusionsTeens represent a growing proportion of road traffic victims. Prevalance use of e-devices among teens proposed growing risk. Evidence-based intervention is strenuous in need.