Rice Eric, Milburn Norweeta G, Rotheram-Borus Mary Jane, Mallett Shelley, Rosenthal Doreen
University of California-Los Angeles.
Am Behav Sci. 2005 Apr 1;48(8):1102-1123. doi: 10.1177/0002764204274194.
The authors examine how the properties of peer networks affect amphetamine, cocaine, and injection drug use over 3 months among newly homeless adolescents, aged 12 to 20 in Los Angeles (n = 217; 83% retention at 3 months) and Melbourne (n = 119; 72% retention at 3 months). Several hypotheses regarding the effects of social network properties on the peer influence process are developed. Multivariate logistic regression analyses show that higher concentrations of homeless peers in networks at recruitment were associated with increased likelihood of amphetamine and cocaine use at 3-month follow-up. Higher concentrations of injecting peers were associated with increased risk of injection drug use 3 months later. Change in network structure over time toward increased concentrations of homeless peers was associated with increased risk of cocaine use and injecting. Higher density networks at baseline were positively associated with increased likelihood of cocaine and amphetamine use at 3 months.
作者研究了同伴网络的特性如何影响洛杉矶12至20岁新成为无家可归者的青少年（n = 217；3个月时保留率为83%）和墨尔本（n = 119；3个月时保留率为72%）在3个月内使用苯丙胺、可卡因和注射毒品的情况。针对社交网络特性对同伴影响过程的作用，提出了几个假设。多变量逻辑回归分析表明，招募时网络中无家可归同伴的较高集中度与3个月随访时使用苯丙胺和可卡因的可能性增加有关。注射同伴的较高集中度与3个月后注射毒品使用风险增加有关。随着时间推移，网络结构向无家可归同伴集中度增加的方向变化与可卡因使用和注射风险增加有关。基线时较高密度的网络与3个月时使用可卡因和苯丙胺的可能性增加呈正相关。
