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Table 2 Weighted odds ratios and 95% confidence intervals for elevated blood pressure according to quartiles of serum copper

From: The association between serum copper concentrations and elevated blood pressure in US children and adolescents: National Health and Nutrition Examination Survey 2011–2016

Serum copper (μg/dL)

Events/cases

OR(95%CI)

Crude

Model1a

Model 2b

Quartile 1

27/312

Ref

Ref

Ref

Quartile 2

30/279

1.14 (0.66–1.96)

1.87 (1.05–3.32) *

1.80 (0.94–3.43)

Quartile 3

45/267

1.78 (1.07–2.95) *

3.37 (1.94–5.85) **

3.70 (1.97–6.95) **

Quartile 4

72/237

3.21 (2.00–5.16) **

5.44 (3.21–9.22) **

5.26 (2.76–10.03) **

P for trend

NA

< 0.001

< 0.001

< 0.001

Per 1 SD serum copper

 

1.52 (1.32–1.75) **

1.76 (1.50–2.06) **

1.69 (1.38–2.07)**

  1. CI, confidence interval; OR, odds ratio; NA, not applicable; SD, standard deviation
  2. *P < 0.05; **P < 0.01
  3. aModel 1 were adjusted by age and sex
  4. bModel 2 were adjusted by age, sex, race, family monthly poverty level category, physical activity, body mass index, total energy intake, serum cotinine, and other trace metals
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BMC Cardiovascular Disorders

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