Assendelft, W.J.

study treatment group patient intervention effect therapy health review screening participant outcome trial evidence anxiety disorder guideline follow-up cochrane status manipulation research mortality result quality comparison anxiety disorders condition population practice therapy • rubinstein scale number month spine control method people protocol care manager analysis blood difference pressure cryotherapy control groups netherland intervention groups randomized blood pressure collaboration manager copyright © 2009 disease university pain relief signi ficant difference article measure signi criteria leiden copyright estimate medication questionnaire appropriateness 13 weeks cochrane collaboration ficant panelists fidence subject rating center rubinstein john wiley analyses author signi ficant effect