Cross-sectional study limitations
Research gap analysis derived from 3 medicine papers in our local library.
The gap
Most studies rely on cross-sectional designs, limiting causal inference and precluding dynamic analysis; longitudinal studies are needed to explore temporal relationships.
Consensus across the literature
The papers collectively establish the need for longitudinal studies but leave open specific methodological details such as sample size and design.
Research trend
Emerging — attention growing, methods still coalescing.
Supporting evidence — 3 representative gaps
- Depressive symptoms in hospitalized geriatric patients with and without cognitive impairment: a cross-sectional network analysis approach (2026) · doi
The cross-sectional design precludes causal inference and limits interpretation to descriptive network patterns; longitudinal studies are needed to examine symptom dynamics over time.
Keywords: cross sectional design precludes causal inference limits interpretation descriptive network patterns longitudinal needed examine symptom - The mediating role of sleep quality in the association between inflammatory disease activity and health-related quality of life in rheumatoid arthritis (2026) · doi
The cross-sectional design precludes definitive causal inference, and the bidirectional nature of the inflammation–sleep axis suggests that longitudinal studies are needed.
Keywords: cross sectional design precludes definitive causal inference bidirectional nature inflammation sleep axis suggests longitudinal needed - Association between continuous low-dose norepinephrine infusion and intraoperative hypotension burden in patients aged 80 years and older undergoing total hip arthroplasty: a retrospective cohort study (2026) · doi
The retrospective single-center design limits generalizability and precludes causal inference.
Keywords: retrospective single center design limits generalizability precludes causal inference
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