human 732 controlled study 643 randomized controlled trial 643 Humans 599 female 520 male 498 adult 428 Female 357 Male 335 Adult 249 Article 241 procedures 193 major clinical study 186 middle aged 181 Middle Aged 160 article 152 treatment outcome 140 adolescent 136 aged 136 young adult 134 Adolescent 129 Young Adult 126 randomized controlled trial (topic) 120 Treatment Outcome 118 psychology 112 double blind procedure 106 human experiment 100 child 99 Aged 96 follow up 91