Association Between the Frailty Index and Self-Reported Headache in Middle-Aged and Older Chinese Adults: An Analysis of the China Health and Retirement Longitudinal Study.

Pain Res Manag · 2026 · PMC13369298 · PMID 42452814

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a significant trendno p-value reported

Compared with Q1, the OR for Q4 was attenuated but remained significant (OR = 27.056, 95% CI: 22.915–31.946, p < 0.001), with a significant trend across FI quartiles (P for trend < 0.001) (Table S3 ).

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