Development and validation of a sodium AnaLysis tool (SALT)

Nutrition Journal

Table 2 Relative validity of sodium intake estimated by the Sodium AnaLysis Tool and 3, 24-h recalls

Sodium Intake mg/day mean ± SD		Significance SALT₂ vs m24HR	Mean Difference SALT₂ vs m24HR mg/day		Pearson’s Correlation Coefficient SALT₂ vs m24HR mg/day
SALT₂	m24HR	P value^a	Mean^b	%^c	Crude r	Variance ratio^d (S₂w/S₂b^e)	De-attenuated r_c^f
2735 ± 1174	2742 ± 980	0.96	−7	−0.3	0.202_g	0.49	0.400

SALT Sodium AnaLysis Tool, SALT₁ the first SALT, SALT₂ the second SALT, m24HR the mean of the 3, 24-h recalls
SD standard deviation
^a paired t-test: t (99) = 0.05; Cohen’s d < 0.02
^b mean difference for SALT₂ vs m24HR calculated as SALT₂ - m24HR
^c % mean difference for SALT₂ vs m24HR calculated as (SALT₂ – m24HR)/m24HR) × 100
^d Variance ratio was calculated from 3, 24-h recalls
^e S₂w/S₂b within-person variation/between-person variation
^f de-attenuated r (r_c) calculated as r_c = r_o√[+S₂w/S₂b]/n, (r_o = observed correlation and n = number of replicates)
^gp < 0.05

ISSN: 1475-2891