grounded theory
type: Concept
broader: comparison

concepts & philosophies
type: Concept
narrower: comparison

comparison group
type: Concept
broader: comparison

multiple-case study
type: Concept
broader: comparison

comparison
narrower: multiple-case study
narrower: historical research
narrower: grounded theory
narrower: cross-national research
narrower: comparison group
narrower: cohort analysis
broader: concepts & philosophies
type: Concept

historical research
type: Concept
broader: comparison

concepts
type: Collection
type: ConceptGroup
member: comparison

cohort analysis
type: Concept
broader: comparison

cross-national research
type: Concept
broader: comparison