Experimental Studies Flashcards

1
Q

Study subjects are enrolled and randomly assigned to intervention or an alternative (e.g., no treatment, placebo, standard therapy, alternative therapy) and followed over a specified time period of observation during which outcome incidence data are collected.

A

Randomized controlled trial

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2
Q

RCT are interested in multiple _____

A

outcomes

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3
Q

In RCT, the population is amenable to _____

A

follow-up

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4
Q

This study evaluates pharmaceuticals, procedures, devices, screening and diagnostic procedures,
preventive measures, policy/organizational changes, or community interventions: ____

A

RCT

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5
Q

In RCT, the _______ relationship is clear (advantage)

A

temporal

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6
Q

In RCT, one can theoretically prevent ______ (advantage)

A

confounding

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7
Q

In RCT, there are strong claims for _______ (advantage)

A

causality

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8
Q

Type of study that is expensive, resource-intensive, and time-consuming?

A

RCT

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9
Q

May have challenges with _____ in RCT

A

compliance

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10
Q

In RCT, loss-to-follow up and drop-out threaten ____

A

validity

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11
Q

In RCT, ______ validity may be limited

A

external

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12
Q

RCT analysis includes ________

A

Descriptive statistics

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13
Q

RCT possible measures of occurrence are:

A
risk difference (RD), risk ratio (RR), incidence rate difference (IRD), incidence rate ratio (IRR), odds ratio (OR), hazard ratio (HR), Number needed to treat
(NNT)
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