Fig 1.
Flowchart of the study population.
Table 1.
The baseline population characteristics among U.S. adults aged 20 years or older.
Table 2.
Relationship between total flavonoid intake and three chronic respiratory diseases among U.S. adults aged 20 years or older.
Table 3.
Association between total flavonoid intake and three chronic respiratory diseases in gender subgroup of U.S. adults aged 20 years and older.
Fig 2.
Dose–response association between flavonoid (in continues) and chronic bronchitis/emphysema/asthma using restricted cubic splines(RCS).
The whole population models of chronic bronchitis (A) and models of gender stratification (D). The whole population models of emphysema (B) and models of gender stratification (E). The whole population models of asthma (C) and models of gender stratification (F) The whole population models were adjusted for gender, age group, race, education, family income, BMI, smoking status, drinking, HEI, hypertension, diabetes. The models of gender stratification were adjusted for age group, race, education, family income, BMI, smoking status, drinking, HEI, hypertension, diabetes.
Table 4.
Relationship between WQS regression index and chronic bronchitis / emphysema / asthma among adults aged 20 years or older.
Fig 3.
WQS model regression index weights for chronic bronchitis (A) and the AUCs of the WQS models (D). WQS model regression index weights for emphysema (B) and the AUCs of the WQS models (E). WQS model regression index weights for asthma (C) and the AUCs of the WQS models (F). WQS models were adjusted for gender, age group, race, education, family income, BMI, smoking status, drinking, HEI, hypertension, diabetes.