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Table 4 Association between serum Zn status and basic physical functioning difficulty stratified by education, 2011–14 NHANES survey data

From: Association between serum zinc levels and basic physical functioning: secondary data analysis of NHANES 2011–14

Multivariable-adjusted odds ratio with 95% confidence interval
  Stratified analyses
  Education
Zn level status < High school (N = 352)
Physical functioning difficulty
Yes = 105; No = 247
High school (N = 253)
Physical functioning difficulty
Yes = 66; No = 187
> High school (N = 531)
Physical functioning difficulty
Yes = 112; No = 419
Low Zn tertile group [Reference] [Reference] [Reference]
Middle Zn tertile group 0.48 (0.26–0.89)* 5.72 (1.92–17.00)* 1.77 (1.05–2.97)*
High Zn tertile group 0.51 (0.24–1.08) 2.42 (0.77–7.56) 0.65 (0.39–1.14)
  1. Note: Model was adjusted for age, sex, weight (obesity vs. normal, overweight vs. normal, underweight vs. normal), race/ethnicity, health insurance, drinking status, smoking status, physical activity, diabetes, serum albumin (gm/dL), and blood hemoglobin (gm/dL)
  2. Abbreviations: aOR = adjusted odds ratio; CI = confidence interval
  3. * Indicates a significant association with p values < 0.05