. 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
Television/	≥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)	Low^a)	1684.6	14.8	1678.2	16.3
Milk and whey-based milk products (g/day)	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
Pulses (g/day)	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
Vegetables (g/day)	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
Fruit (g/day)	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
Fruit and vegetables (g/day)	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