observational study (Q818574)
study that draws inferences from a sample to a population, in cases where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints
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aliases surveillance study
 observational studies
 observation study
description study that draws inferences from a sample to a population, in cases where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints

External Links
(P486) D064887
(P646) /m/0g140l
(P672) E05.318.372.250.500
N05.715.360.330.250.500
N06.850.520.450.250.500
(P2263) 4435
(P2581) 03475905n
(P2671) /g/121_60vy
(P2892) C3658316
(P3827) observational-studies
(P6366) 23131810
2908601960
(P8408) ObservationalStudy
(P10283) C3018709324
C23131810