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. 2025 Oct 20;25:823. doi: 10.1186/s12887-025-06027-3

Table 2.

Association between dietary carotenoids in quartiles and ARI risk in the general US population, NHANES 2003 − 2018

Carotenoids Model 1 Model 2 Model 3
OR (95% CI) OR (95% CI) OR (95% CI)
Q1 1.00 [Ref] 1.00 [Ref] 1.00 [Ref]
Q2 0.83 (0.72 − 0.96) 0.84 (0.72 − 0.98) 0.88 (0.74 − 1.05)
Q3 0.75 (0.65 − 0.87) 0.79 (0.68 − 0.91) 0.83 (0.70 − 0.97)
Q4 0.73 (0.63 − 0.84) 0.78 (0.68 − 0.90) 0.85 (0.72 − 0.99)
P for trend < 0.001 0.006 0.11
(ln-transformed) 0.89 (0.85 − 0.93) 0.92 (0.88 − 0.96) 0.94 (0.89 − 0.98)

ARI Acute respiratory infection, CI Confidence interval, OR Odds ratio, Q Quartile, Ref reference

Model 1: unadjusted

Model 2: adjusted for age, sex, and race/ethnicity

Model 3: adjusted for age, sex, race/ethnicity, family poverty-income ratio, body mass index, smoke exposure, and asthma

P values for trend were calculated by fitting median scores for quartiles as continuous variables in models