TABLE 2

Multiple Linear Regression Analyses of Fluid Consumption (g/d) and Dietary Salt Intake (g/d) in Australian Children Aged 2 to 16 Years, by Gender and Age Group (n = 4283)a,b

Modelβ (95% CI)R2β (95% CI)R2nβ (95% CI)R2
UnadjustedAdjusted for age, gender, SES, BMIAdjusted for age, gender, SES, BMI, MVPAc
Total sample (n = 4283)92.1 (81.9–102.2)**.1545.5 (34.5–57.6)**0.26230444.7 (28.6–61.0)**.22
Stratified by genderUnadjustedAdjusted for age, SES, BMIAdjusted for age, SES, BMI, MVPAc
Boys (n = 2170)98.4 (87.5–109.2)**.1850.9 (36.0–65.8)**0.28114251.8 (31.3–72.2)**.22
Girls (n = 2113)66.3 (52.6–79.9)**.0729.8 (15.0–44.6)**0.19116229.7 (11.2–48.2)*.15
Stratified by age groupUnadjustedAdjusted for gender, SES, BMIAdjusted for gender, SES, BMI, MVPAc
2–4 y (n = 1057)64.0 (48.6–79.5)**.0761.3 (46.3–76.3)**0.08No PA datad
4–8 y (n = 1208)50.2 (31.6–68.9)**.0539.6 (22.7–57.8)**0.0972841.3 (19.5–63.1)**.11
9–13 y (n = 1058)74.0 (57.0–91.0)**.0860.9 (42.2–79.6)**0.1382067.8 (41.5–94.0)**.13
14–16 y (n = 960)53.8 (33.5–74.4)**.0534.4 (10.3–55.8)**0.1075631.5 (4.6–58.5)*.13
  • MVPA, moderate to vigorous physical activity.

  • a In all models: dependent variable = fluid consumption (g/d) and independent variable = salt intake (g/d).

  • b All models are statistically significant P < .001.

  • c Completed within subsample of participants with physical activity data available.

  • d Analysis not completed in 2- to 3-year-olds because physical activity (PA) was not measured in this age group.

  • * P <.01.

  • ** P <.001.