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The 131 pages that link to Randomized controlled trial, each with the reason it gives.

• DiceRelated: Physical randomization has sometimes used dice to assign participants.

• FlavonoidRelated: Trials can test specific flavonoid interventions, but compound choice and dose complicate comparisons.

• QigongRelated: Trials of qigong test whether reported benefits exceed effects of attention, expectation, and activity.

• Quantitative researchBroader topic: Random assignment can support estimates of an intervention’s causal effect.

• Combination therapyRelated: Trials test whether a combination improves outcomes over its components or alternatives.

• Fecal microbiota transplantationRelated: Trials help distinguish treatment benefit from spontaneous recovery and other influences.

• Poverty reductionRelated: Trials can test whether a specific anti-poverty intervention caused measured changes.

• Alternative medicineRelated: It can test whether an alternative treatment improves outcomes beyond placebo and usual care.

• Hawthorne effectRelated: Random assignment helps control confounding, but does not by itself eliminate behavior changes from study participation.

• NutritionCompared with: Trials can test dietary interventions under conditions that observational diet studies cannot fully control.

• PsychopharmacologyRelated: Trials test whether psychiatric medications outperform placebo or another treatment.

• AkathisiaRelated: Trials can test treatments, but evidence for akathisia interventions remains limited.

• Art therapyRelated: Trials can test specific art therapy outcomes, though complex therapies are difficult to isolate.

• Control groupRelated: Random assignment makes differences between the control group and intervention group less systematic.

• Experimental methodBroader topic: It applies controlled intervention to estimate treatment effects in people.

• Injury preventionRelated: Trials can test whether a prevention program actually reduces injuries.

• Intermittent fastingNarrower topic: These trials help separate effects of fasting schedules from differences in participant behavior.

• Vaccine efficacyRelated: Random allocation helps make outcome differences interpretable as effects of vaccination.

• BiostatisticsBroader topic: Random assignment helps biostatisticians separate treatment effects from confounding.

• ChanceBroader topic: Random assignment uses chance to reduce systematic differences between comparison groups.

• Clinical researchBroader topic: It is a specific trial design that can strengthen causal comparisons.

• National Bureau of Economic ResearchRelated: Experimental methods appear in NBER studies of labor, education, health, and development.

• Play therapyRelated: Trials can test outcomes, though varied methods and populations complicate comparisons.

• CannabidiolNarrower topic: Trials using this design established CBD’s seizure-treatment evidence more reliably than anecdotal reports.

• Case reportCompared with: Random allocation supports causal treatment comparisons that one case cannot provide.

• Dietary guidelinesRelated: Trials can test dietary interventions, though long-term whole-diet studies are difficult to conduct.

• Experimental economicsNarrower topic: Its assignment logic underlies many controlled tests of economic interventions.

• Medical cannabisRelated: Few conditions have strong trial evidence across the range of cannabis products and doses.

• Doctrine of signaturesCompared with: Random assignment tests a remedy without relying on signatures as proof.

• Frequentist inferenceBroader topic: Random assignment supports valid sampling-based comparisons and tests of treatment effects.

• Medium-chain triglycerideRelated: Controlled trials are needed to separate MCT effects from changes in calories and other fats.

• Nutritional scienceRelated: Trials can test dietary interventions, though long-term diet studies are difficult to conduct.

• Pregnancy and antidepressantsCompared with: Pregnancy medication risks are rarely tested in such trials, so evidence mainly comes from observational studies.

• Random assignment (experimental design)Broader topic: It is the best-known study design built around random assignment.

• Biodynamic agricultureRelated: Controlled trials provide one way to test biodynamic treatments separately from whole-farm management.

• Dental abrasionRelated: Trials can test whether changes in brushing technique reduce abrasion.

• Esther DufloNarrower topic: Duflo uses random assignment to compare policy interventions while limiting selection bias.

• LycopeneRelated: Trials are needed to test whether lycopene intake causes health benefits beyond observational associations.

• Research methodBroader topic: It is a specific design for testing intervention effects under controlled assignment.

• Sports scienceRelated: It is a prominent design for testing training or health interventions.

• ZeaxanthinRelated: Trials are needed to distinguish supplementation effects from associations in dietary studies.

• Academic researchBroader topic: It is a rigorous design for estimating effects in health and social research.

• Economic methodologyBroader topic: Its use in development economics raises questions about external validity and mechanism.

• Economics of educationRelated: Random assignment can test education interventions, though results may not generalize across settings.

• Educational researchRelated: Random assignment can test whether an educational intervention caused measured changes in learning.

• Matching (statistics)Compared with: Random assignment balances measured and unmeasured causes in expectation, unlike observational matching.

• Phage therapyRelated: Controlled trials can establish how well phage treatment works beyond individual reports.

• CurcuminNarrower topic: Such trials are needed to distinguish clinical benefits from laboratory findings and expectation effects.

• HIV/AIDS denialismRelated: Trials of antiretroviral treatment test whether suppressing HIV improves clinical outcomes.

• Open-label placeboRelated: Random allocation helps test whether observed improvement exceeds change under usual care or another control.