NCCAM (National Center for Complementary and Alternative Medicine). 2004. National Center for Complementary and Alternative Medicine: The First Five Years. Bethesda, MD: National Institutes of Health.
Newgard CD, Hedges JR, Arthur M, Mullins RJ. 2004. Advanced statistics: The propensity score—a method for estimating treatment effect in observational research. Acad Emerg Med 11(9):953–961.
Park CM. 2002. Diversity, the individual, and proof of efficacy: Complementary and alternative medicine in medical education. Am J Public Health 92(10):1568–1572.
Pocock SJ, Elbourne DR. 2000. Randomized trials or observational tribulations? N Engl J Med 342(25):1907–1909.
Pollo A, Amanzio M, Arslanian A, Casadio C, Maggi G, Benedetti F. 2001. Response expectancies in placebo analgesia and their clinical relevance. Pain 93(1):77–84.
Rossouw JE, Anderson GL, Prentice RL, LaCroix AZ, Kooperberg C, Stefanick ML, Jackson RD, Beresford SA, Howard BV, Johnson KC, Kotchen JM, Ockene J. 2002. Risks and benefits of estrogen plus progestin in healthy postmenopausal women: Principal results from the Women’s Health Initiative randomized controlled trial. JAMA 288(3):321–333.
Tunis SR, Stryer DB, Clancy CM. 2003. Practical clinical trials: Increasing the value of clinical research for decision making in clinical and health policy. JAMA 290(12):1624–1632 .
Wampold BE, Mondin GW, Moody M, Stich F, Benson K, Ahn H. 1997. A meta-analysis of outcome studies comparing bona fide psychotherapies: Empiricially, “all must have prizes.” Psychol Bull 122(3):203–215.
Wennberg JE, Barry MJ, Fowler FJ, Mulley A. 1993. Outcomes research, PORTs, and health care reform. Ann NY Acad Sci 703:52–62.
Wolsko PM, Eisenberg DM, Davis RB, Ettner SL, Phillips RS. 2002. Insurance coverage, medical conditions, and visits to alternative medicine providers: Results of a national survey. Arch Intern Med 162(3):281–287.