Table 4.

The results of the non-linear relationship between DOBS and Sarcopenia

Inflection point of DOBS	Effect size (β)	95%CI	P value
< 23	1.62	1.09, 2.41	0.016
≥ 23	0.97	0.95, 0.98	< 0.001

Effect: sarcopenia, Cause: DOBS

Adjusted: age, gender, BMI, smoking status, alcohol consumption, physical activity, education level, PIR, nutrient supplement use, self-reported cancer, cardiovascular disease, hypertension, and diabetes

Statistical analysis: Two-piecewise linear regression. Significance level: P < 0.05 (two-tailed). Bold values indicate statistical significance

CI: confidence interval; DOBS: dietary oxidative balance score; PIR: poverty income ratio