Development and double cross-validation of new spot urine sodium equation to predict 24-h urine sodium in the Malaysian population

Table 3 Twenty-four hour urine sodium predicting equation

Predicting equation	909.368 + 24.052 (weight in kg) − 0.11 (age² in year) + (538.38 if male) + 0.269 (spot sodium in mg/L) − 5.469 (spot creatinine in mg/dL) + 5.541 (spot potassium in mmol/L)
Parameters	β	SE	P value
Weight	0.297	2.674	< 0.001
Age²	− 0.138	0.026	< 0.001
Male	0.227	78.053	< 0.001
Spot sodium (mg/L)	0.94	0.032	< 0.001
Spot creatinine (mg/dL)	− 0.32	0.703	< 0.001
Spot potassium (mmol/L)	0.153	1.301	< 0.001

ISSN: 2072-1315