Subject: Randomized parallel-group study 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Randomized control trial (RCT) 14 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Randomized circuit 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Randomized Kaczmarz algorithm 12 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Randomized protocol 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Research dissemination randomized controlled trials 10 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Randomized PCA 18 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Placebo-controlled randomized crossover trial 11 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Placebo-controlled randomized parallel trial 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Placebo-controlled randomized parallel study 16 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Placebo-controlled randomized crossover double-blind trial 9 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Placebo-controlled randomized parallel double-blind trial 14 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Placebo-controlled randomized parallel double-blind study 8 general knowledge quiz questions. It should take around 2 minutes to complete all the questions.

Subject: Placebo-controlled randomized crossover blinded study 20 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.

Subject: Placebo-controlled randomized single-blind study 13 general knowledge quiz questions. It should take around 3 minutes to complete all the questions.

Subject: Placebo-controlled randomized blinded study 19 general knowledge quiz questions. It should take around 4 minutes to complete all the questions.