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. 2015 May 17;15:60. doi: 10.1186/s12887-015-0374-z

Table 4.

Relation between urinary potassium excretion and descriptive variables

Potassium excretion (mg/day)
Boys (n = 81) Girls (n = 82)
Mean SD Mean SD
BMI categories Underweight 1618.5 82.7 1540.5 622.0
Normal weight 1601.5 573.9 1644.1 577.1
Overweight 1924.0 826.9 1670.5 537.5
Obese 1807.0 534.5 1841.4 437.0
p 0.241 0.582
p* 0.248 0.373
Sports activities (times/week) <2/week 1737.4 477.7 1663.7 520.5
2–3/week 1664.0 668.8 1666.8 652.4
>4/week 1359.4 652.8 1560.0 315.2
p 0.281 0.886
p* 0.200 0.259
Sleeping (hours/day) ≤8 h/day 1665.1 485.0 1642.9 386,0
9 h/day 1629.5 764.8 1710.4 682,8
≥10 h/day 1696.5 465.5 1648.9 497,9
p 0.805 0.765
p* 0.143 0.091
Television/ <2 h/day 1642.6 537.3 1664.7 557.3
≥2 h/day 1859.0 969.4 1911.0 565.2
p 0.440 0.261
p* 0.638 0.104
Father’s education 0–9 years 1673.6 407.3 1571.1 481.9
10–12 years 1960.6 616.2 1654.7 549.8
>12 years 1578.0 875.9 1547.0 509.1
p 0.271 0.800
p* 0.144 0.376
Mother’s education 0–9 years 1655.8 426.4 1540.5 451.3
10–12 years 1818.0 688.6 1881.8 499.1
>12 years 1716.0 774.1 1521.0 557.5
p 0.712 0.072
p* 0.612 0.784
Milk and whey-based milk products (g/day) Lowa) 1684.6 14.8 1678.2 16.3
High 1693.8 21.8 1689.8 19.3
p 0.231 0.036
p* 0.373 0.060
Pulses (g/day) Low a) 1689.3 18.8 1681.1 16.8
High 1688.1 20.3 1691.0 21.4
p 0.507 0.767
p* 0.476 0.944
Vegetables (g/day) Low a) 1686.8 23.7 1682.6 21.7
High 1690.9 14.0 1685.9 14.0
p 0.587 0.301
p* 0.622 0.366
Fruit (g/day) Low a) 1687.6 15.6 1683.1 19.2
High 1690.7 22.5 1685.1 18.3
p 0.955 0.178
p* 0.963 0.195
Fruit and vegetables (g/day) Low a) 1689.0 23.5 1683.4 21.6
High 1689.0 15.2 1684.9 14.9
p 0.972 0.260
p* 0.890 0.299

*Adjusted for energy intake

a) Low and high refers to intakes below the median or at or above the median, respectively