Division of Psychology.
Department of Psychiatry and Behavioral Sciences.
J Consult Clin Psychol. 2020 Jul;88(7):643-656. doi: 10.1037/ccp0000506.
To investigate the effectiveness of Body Project groups delivered virtually (vBP) by peer educators for prevention of eating disorders.
In a randomized controlled trial vBP groups (N = 149) were compared with a placebo (expressive writing, EW: N = 148) over 24-month follow-up and to a waitlist control condition (N = 146) over 6-month follow-up among females (15-20 years old) with body image concerns. The primary outcome was incidence of eating disorder onset over 2-year follow-up measured by blinded diagnostic interviews. Waitlist participants were offered the vBP after 6 months.
The incidence of eating disorders onset over 24 months follow up were 3 in vBP (2.0%) and 13 in EW (8.8%), a significant difference; Hazard Ratio (Experiment B) = 0.26, 95% confidence interval (CI) [0.075, 0.92], p = .037. Incidence of eating disorder onset in vBP participants was 77% less than in EW participants. The vBP participants generally showed significantly greater reduction in eating disorder symptoms, clinical impairment, body dissatisfaction, and internalization of thin ideal compared with the waitlist participants at postintervention and 6-month follow-up, and in eating disorder symptoms, restraint, body dissatisfaction, and internalization of thin ideal compared with the EW participants at postintervention, and 6-, 12-, 18-, or 24-months follow-up. EW participants reported significantly greater reduction in clinical impairment and body dissatisfaction at postintervention compared with the waitlist participants.
The present reduction in the incidence of eating disorders is notable given that the intervention was implemented virtually, rather than in-person. The vBP might be a viable option for future evaluation of scalable prevention of eating disorders. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
研究由同伴教育者在线（vBP）实施的 Body Project 团体对预防进食障碍的有效性。
在一项随机对照试验中，24 个月的随访中，将 vBP 组（N=149）与安慰剂（表达性写作，EW：N=148）进行比较，6 个月的随访中与等待名单对照组（N=146）进行比较，对象为有身体意象问题的 15-20 岁女性。主要结局是通过盲法诊断访谈测量的 2 年随访期间进食障碍的发生率。6 个月后，等待名单参与者被提供 vBP。
在 24 个月的随访期间，进食障碍的发生率为 vBP 组 3 例（2.0%），EW 组 13 例（8.8%），差异显著；风险比（实验 B）=0.26，95%置信区间（CI）[0.075，0.92]，p=0.037。vBP 组的进食障碍发生率比 EW 组低 77%。与等待名单组相比，vBP 组在干预后和 6 个月随访时，进食障碍症状、临床损伤、身体不满和内化瘦理想等方面的改善更为显著，与 EW 组相比，干预后和 6、12、18 或 24 个月随访时，在进食障碍症状、抑制、身体不满和内化瘦理想等方面的改善更为显著。与等待名单组相比，EW 组在干预后报告的临床损伤和身体不满的减少更为显著。
鉴于该干预措施是虚拟实施的，而不是面对面进行的，目前进食障碍发生率的降低是值得注意的。vBP 可能是未来评估可扩展的进食障碍预防的可行选择。
