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. Author manuscript; available in PMC: 2023 Sep 1.
Published in final edited form as: Neurobiol Aging. 2022 May 3;117:12–23. doi: 10.1016/j.neurobiolaging.2022.04.009

Table 5.

The association between PCs enriched in caffeine metabolism and caffeine intake in WRAP.

PC Caffeine intake
Estimate p adjusted p
PC8 −0.1368 3.95E-01 1.00E+00
PC13 0.1204 3.06E-01 1.00E+00
PC16 −0.2873 3.72E-03 1.49E-02
PC20 0.0026 9.75E-01 1.00E+00

The adjusted p values were calculated based on the Bonferroni adjustment for 4 PCs.