Spot urine samples and estimation of population salt intake: the return of the phoenix: Erratum

In the article by Cappuccio et al. ^[1], the authors have noted that Table 1 was incorrectly published. The correct table is shown below:

TABLE 1 - Differences in measured (by 24-h urine collection) and estimated (by spot urine collections with INTERSALT without K formula) sodium intake in six population studies.

Ref.	Population	Sample size (n)	Measured 24-h UNa (SD) g/day	Estimated 24-h UNa by INTERSALT (SD) g/day
Cogswell et al. [4]	USA	339	3.32 (1.44)	3.16 (0.89)a
Peng et al. [5]	Chinese (PURE)	116	6.34 (2.47)	3.54 (0.87)a
Ma et al. [6]	Rural China	365	3.73 (1.62)	2.99 (0.95)a
Swanepoel et al. [7]	S Africa White Black_1 Black_2 Indian	259 211 104 107	3.35 (1.76) 3.42 (1.92) 3.48 (3.31) 2.68 (1.46)	2.89 (0.74)∗ 3.05 (0.71)∗ 3.25 (0.58) 3.52 (0.71)a
Charlton et al. [8]	S Africa	438	2.76 (1.73, 4.13)b	1.18 (0.98, 1.38)a
Zhang et al. [9]	Chinese Tibetans	323	4.57 (0.89)	3.26 (0.76)a

Results are expressed as mean (SD) of sodium in g per day with the exception of ^bexpressed as median (IQR).^a Statistically significant vs. measured 24-h urinary sodium.