Thompson Darcy A, Tschann Jeanne M
Department of Pediatrics, Section of Nutrition, University of Colorado School of Medicine, Anschutz Medical Campus - Mail Stop F561, 12631 East 17th Avenue, Room 2605, Aurora, CO, 80045, USA.
Department of Psychiatry, University of California at San Francisco, Box 0848, San Francisco, CA, 94143-0848, USA.
Matern Child Health J. 2016 Sep;20(9):1835-41. doi: 10.1007/s10995-016-1986-0.
Objective Background television (TV) exposure is harmful to young children, yet few studies have focused on predictors of exposure. This study's objectives were to elucidate demographic, environmental, and behavioral correlates of background TV exposure in low-income Mexican-American preschoolers and to explore caregiver beliefs about the impact of such exposure. Methods A convenience sample of low-income Mexican-American female primary caregivers of preschoolers (3-5 years old, n = 309), recruited in safety-net clinics, were surveyed by phone. Caregivers reported the frequency of their child's exposure to background TV and responded to questions on the home media environment, TV use, and whether they had thought about background TV exposure and its impact on their child. Results Background TV exposure was common; 43 % reported that their child was often, very often, or always exposed to background TV. More hours of TV viewing by the caregiver and greater frequency of TV viewing during meals were associated with an increased frequency of exposure to background TV. Only 49 % of participants had ever thought about the impact of background TV. Believing that background TV is not harmful was associated with higher levels of background TV exposure. Conclusions Findings suggest that background TV exposure is frequent and caregiver awareness of its potential impact is low in low-income Mexican-American families. Beliefs that background TV is not harmful may predict risk of exposure. Potential targets for interventions focused on reducing background TV exposure in this population include increasing caregiver awareness of the potential negative impact of such TV exposure.
目的 背景电视暴露对幼儿有害，但很少有研究关注暴露的预测因素。本研究的目的是阐明低收入墨西哥裔美国学龄前儿童背景电视暴露的人口统计学、环境和行为相关因素，并探讨照顾者对这种暴露影响的看法。方法 在安全网诊所招募了低收入墨西哥裔美国学龄前儿童（3 - 5岁，n = 309）的女性主要照顾者作为便利样本，通过电话进行调查。照顾者报告其孩子暴露于背景电视的频率，并回答有关家庭媒体环境、电视使用情况的问题，以及他们是否考虑过背景电视暴露及其对孩子的影响。结果 背景电视暴露很常见；43%的照顾者报告他们的孩子经常、非常经常或总是暴露于背景电视。照顾者看电视的时间越长以及用餐期间看电视的频率越高，与背景电视暴露频率增加相关。只有49%的参与者曾考虑过背景电视的影响。认为背景电视无害与更高水平的背景电视暴露相关。结论 研究结果表明，在低收入墨西哥裔美国家庭中，背景电视暴露很频繁，照顾者对其潜在影响的认识较低。认为背景电视无害可能预示着暴露风险。针对该人群减少背景电视暴露的干预措施的潜在目标包括提高照顾者对这种电视暴露潜在负面影响的认识。
