sampling error
type: Concept
broader: longitudinal research

retrospective data
type: Concept
broader: longitudinal research

attrition
type: Concept
broader: longitudinal research

panel data
type: Concept
broader: longitudinal research

studies of aging
type: Concept
narrower: longitudinal research

research design
type: Concept
narrower: longitudinal research

prospective data
type: Concept
broader: longitudinal research

qualitative data collection
type: Concept
narrower: longitudinal research

longitudinal research
type: Concept
definition: Longitudinal studies are those in which measurement occurs at more than one point in time. These can use qualitative, quantitative, or a combination of methods. [Source: Encyclopedia of Health & Aging; Longitudinal Research]
broader: law and society research
broader: qualitative data collection
broader: research design
broader: studies of aging
broader: statistics, research methods, and measurement
narrower: panel data
narrower: attrition
narrower: retrospective data
narrower: prospective data
narrower: sampling error

law and society research
type: Concept
narrower: longitudinal research

statistics, research methods, and measurement
type: Concept
narrower: longitudinal research

methods
type: Collection
type: ConceptGroup
member: longitudinal research