Hanewinkel Reiner
Institute for Therapy and Health Research, IFT-Nord, Harmsstrasse 2, 24114 Kiel, Germany.
Arch Pediatr Adolesc Med. 2009 Jan;163(1):15-8. doi: 10.1001/archpedi.163.1.15.
To study the effects of smoking in a film trailer.
Experimental study.
Ten secondary schools in Northern Germany.
A sample of 1051 adolescents with a mean (SD) age of 14.2 (1.8) years. Main Exposures Participants were randomized to view a 42-second film trailer in which the attractive female character either smoked for about 3 seconds or did not smoke.
Perception of the character was measured via an 8-item semantic differential scale. Each item consisted of a polar-opposite pair (eg, "sexy/unsexy") divided on a 7-point scale. Responses to individual items were summed and averaged. This scale was named "attractiveness." The Cronbach alpha for the attractiveness rating was 0.85.
Multilevel mixed-effects linear regression was used to test the effect of smoking in a film trailer. Smoking in the film trailer did not reach significance in the linear regression model (z = 0.73; P = .47). Smoking status of the recipient (z = 3.81; P < .001) and the interaction between smoking in the film trailer and smoking status of the recipient (z = 2.21; P = .03) both reached statistical significance. Ever smokers and never smokers did not differ in their perception of the female character in the nonsmoking film trailer. In the smoking film trailer, ever smokers judged the character significantly more attractive than never smokers.
Even incidental smoking in a very short film trailer might strengthen the attractiveness of smokers in youth who have already tried their first cigarettes.
研究电影预告片里吸烟镜头的影响。
实验性研究。
德国北部的十所中学。
1051名青少年样本,平均(标准差)年龄为14.2(1.8)岁。主要暴露因素 参与者被随机分配观看一段42秒的电影预告片,其中有魅力的女性角色要么吸烟约3秒,要么不吸烟。
通过一个包含8个条目的语义差异量表来测量对该角色的看法。每个条目由一对极性相反的词(如“性感/不性感”)组成,在7分制量表上划分。对各个条目的回答进行求和并求平均值。这个量表被命名为“吸引力”。吸引力评分的克朗巴哈系数为0.85。
采用多水平混合效应线性回归来检验电影预告片中吸烟镜头的影响。电影预告片中的吸烟镜头在该线性回归模型中未达到显著水平(z = 0.73;P = 0.47)。接受者的吸烟状况(z = 3.81;P < 0.001)以及电影预告片中的吸烟镜头与接受者吸烟状况之间的交互作用(z = 2.21;P = 0.03)均达到统计学显著水平。曾经吸烟者和从不吸烟者对不吸烟电影预告片中女性角色的看法没有差异。在吸烟的电影预告片中,曾经吸烟者认为该角色比从不吸烟者更具吸引力。
即使是在非常短的电影预告片中出现的偶然吸烟镜头,也可能会增强已经吸过第一支烟的年轻人对吸烟者的吸引力。