Kumanyika Shiriki K, Shults Justine, Fassbender Jennifer, Whitt Melicia C, Brake Vivian, Kallan Michael J, Iqbal Nayyar, Bowman Marjorie A
Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104-6021, USA.
Prev Med. 2005 Aug;41(2):488-502. doi: 10.1016/j.ypmed.2004.09.049.
Effective clinical weight management approaches are needed to reach African-Americans.
African-Americans recruited through outpatient practices for a culturally-adapted Healthy Eating and Lifestyle Program were offered 10 weekly weight loss classes (Phase 1) with the option of continuing for another 8-18 months (Phase 2) in a randomized comparison of further group counseling or staff-facilitated self-help vs. follow-up clinic visits only.
Of 237 enrollees (91% women; mean age 43.5 years; mean body mass index 38.0 kg/m(2)), 70 [corrected] attended no classes or only the first Phase 1 class, 134 provided Phase 1 follow-up data, 128 were randomized in Phase 2, and 87 provided final follow-up data ("completers"). Mean weight changes for completers were: -1.5 (P < 0.001), +0.3 (P = 0.47), and -1.2 (P = 0.04) kg, respectively, for Phase 1, Phase 2, and overall (baseline to final visit; average 18 months total duration), with no Phase 2 treatment effect (P = 0.55). Final study weight was > or =5% below baseline for 25% of completers and was strongly predicted by Phase 1 weight loss.
Weight loss achieved in Phase 1 was maintained even with relatively minimal follow-up contact. Increasing the percent who achieve clinically significant weight loss initially would improve long-term results.
需要有效的临床体重管理方法来惠及非裔美国人。
通过门诊招募非裔美国人参加一个经过文化调适的健康饮食与生活方式项目,为他们提供为期10周的减肥课程(第一阶段),他们可以选择继续参加另外8 - 18个月的课程(第二阶段),该项目进行随机比较,即进一步的小组咨询或工作人员协助的自助方式与仅进行后续门诊随访。
在237名登记者中(91%为女性;平均年龄43.5岁;平均体重指数38.0 kg/m²),70名[校正后]未参加任何课程或仅参加了第一阶段的第一堂课,134名提供了第一阶段的随访数据,128名在第二阶段被随机分组,87名提供了最终随访数据(“完成者”)。完成者在第一阶段、第二阶段以及总体(从基线到最终随访;总时长平均18个月)的平均体重变化分别为:-1.5(P < 0.001)、+0.3(P = 0.47)和 -1.2(P = 0.04)kg,第二阶段无治疗效果(P = 0.55)。25%的完成者最终研究体重比基线低≥5%,且第一阶段体重减轻情况对其有强烈预测作用。
即使随访接触相对较少,第一阶段实现的体重减轻仍得以维持。提高最初实现临床上显著体重减轻的百分比将改善长期效果。