One-factor-at-a-time method 1970-01-01
Open-label trial 1970-01-01
Orthogonal array 1970-01-01
Orthogonal array testing 1970-01-01
Paradigm (experimental) 1970-01-01
Phases of clinical research 1970-01-01
Placebo-controlled study 1970-01-01
Plackett–Burman design 1970-01-01
Pocock boundary 1970-01-01
Protocol (science) 1970-01-01
Provocation test 1970-01-01
Pseudoreplication 1970-01-01
Quasi-experiment 1970-01-01
Random assignment 1970-01-01
Randomized controlled trial 1970-01-01
Randomized experiment 1970-01-01
Repeated measures design 1970-01-01
Replication (statistics) 1970-01-01
Resentful demoralization 1970-01-01
Response surface methodology 1970-01-01