Validity of salt intake assessment system based on a 24-h dietary recall method using a touch panel computer. (November 2014)

• Record Type: Journal Article
• Authors: Satoh, Michihiro; Kato, Noriko; Hosaka, Miki; Elnagar, Noha; Tsuchihashi, Takuya; Yagi, Naoto; Ebara, Futoshi; Uchiba, Kiyoshi; Mori, Hisao; Kato, Mitsutoshi; Yamamoto, Hareaki; Yoshida, Katsumi; Miyakawa, Masaaki; Hatori, Yutaka; Yamamoto, Yoshiharu; Katsuya, Tomohiro; Watanabe, Yoshihiko; Yatagai, Shigeo; Sato, Hiroshi; Imai, Yutaka
• Is Part Of: Clinical and experimental hypertension. Volume 36:Number 7(2014)
• Page Start: 471
• Page End: 477
• Publication Date: 2014-11
• Subjects: Hypertension -- Chemotherapy -- Periodicals; Hypotensive agents -- Periodicals; 616.132
• DOI: 10.3109/10641963.2013.863319
• Languages: English
• ISSNs: 1064-1963

Abstract

<abstract> <title>Abstract</title> <p> <italic>Background</italic>: An electronic system for salt intake assessment using a 24-h dietary recall method has been developed in Japan. We evaluated the validity of this salt intake system for assessing salt intake.</p> <p> <italic>Methods</italic>: We prospectively obtained data on estimated salt intake using 24-hour urinary sodium excretion (24-hUNaCl) and salt intake by the salt intake assessment system from 203 consecutive outpatients with essential hypertension (age: 67.8 ± 10.7 years; 53.7% men).</p> <p> <italic>Results</italic>: Mean values were 9.7 ± 2.9 g/day for 24-hUNaCl and 9.1 ± 2.9 g/day for the salt intake assessment system before corrections. The salt intake estimated by the present system was significantly correlated with 24-hUNaCl (<italic>r</italic> = 0.66, <italic>p</italic> < 0.0001). After corrections for habitual use of discretionary seasonings, habitual intake of salty foods, and physical activity, correlation coefficients between salt intake and 24-hUNaCl increased from 0.60 to 0.66 in men <65 years, from 0.80 to 0.81 in men ≥65 years, from 0.64 to 0.75 in women <65 years, and from 0.52 to 0.59 in women ≥65 years. After further correction for regional differences in average salt intake, the correlation coefficient reached 0.72 in all patients.</p> <p> <italic>Conclusion</italic>: After correction for dietary habits, lifestyle factors, and differences in average salt intake by region, this system may be a useful tool in Japan to encourage salt restriction in the clinical treatment of hypertension and improve public health in terms of salt restriction overall.</p> </abstract>