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Table 2 The Scheffe multiple-comparison tests for mean differences of urine parameters by hypertension groups

From: Salt intake and blood pressure in Iranian children and adolescents: a population-based study

Urine parameters

Hypertension groups

Normal blood pressure

Pre-hypertension

Mean difference

p value

Mean difference

p value

Spot urine Na (mmol/L)

Pre-hypertension

54.33

< 0.001

  

Hypertension

38.03

< 0.001

− 16.30

0.148

Calculated 24 h Na (mmol/L)

Pre-hypertension

18.76

< 0.001

  

Hypertension

23.58

< 0.001

4.83

0.663

Calculated 24 h K (mmol/L)

Pre-hypertension

0.76

0.716

  

Hypertension

3.51

0.002

2.75

0.104

Calculated 24 h Na/K

Pre-hypertension

0.40

< 0.001

  

Hypertension

0.24

< 0.001

− 0.16

0.600

Calculated 24 h NaCl (g/day)

Pre-hypertension

1.10

< 0.001

  

Hypertension

1.38

< 0.001

0.28

0.663