Deliverable D 1.3 RESULTS OF META-ANALYSIS ... - cast-eu.org

Campaigns and awareness raising strategies in traffic safety — Deliverable D-1.1Table 7.53 Overall effects of mass-media campaigns on road accidents according totreatment of risk in campaign. Results are given after accounting for publication bias. Eachoverall effect is based on n individual effects (excluding any artificial effects generated bytrim-and-fill).yesnoCategoryeffect(%)95%confidenceinterval (%)nSig.?(p < 0.05)effect(%)95%confidenceinterval (%)nSig.?(p < 0.05)Riskaddressed? -12 (-17; -8) 67 yes -11 (-22; +0) 11 norisk ofdetectionaddressed? -14 (-19;-8) 51 yes -8 (-15;-1) 29 yesrisk of harm toselfaddressed? -4 (-10;+2) 19 no -14 (-19;-8) 62 yesrisk of harm toothersaddressed? -4 (-12;+4) 14 no -14 (-18;-9) 67 yesTable 7.54 Overall effects of mass-media campaigns on seatbelt use according to treatment ofrisk in campaign. Results are given after accounting for publication bias.yesnocategoryeffect(%)95%confidenceinterval (%)nSig.?(p < 0.05)effect(%)95%confidenceinterval (%)nSig.?(p < 0.05)riskaddressed? +35 (+9;+68) 42 yes +6 (-10;+24) 12 norisk ofdetectionaddressed? +17 (+12; +23) 33 yes +3 (-11;+19) 21 yesrisk of harm toselfaddressed? +13 (-1;+29) 13 no +21 (+12;+30) 46 yesrisk of harm toothersaddressed? +7 (-8;+23) 10 no +18 (+10;+27) 49 yes7.6.7 SUMMARYThis section presents the results of subgroup analyses exclusively forcampaigns employing at least one out of tv, radio or newspaper as a mode ofdelivery. Campaigns selected in this way are labeled mass-media campaigns.90 per cent of the accident count effects are derived from mass-mediacampaigns, compared with only 49 per cent of seatbelt effects.According to a number of different behavioural outcome measures, overalleffect size either remains the same or somewhat reduced once mass-mediacampaigns are selected for. This seems to be at least partly becauseselecting for mass-media campaigns appears to exclude a considerable97