Development of salt intake assessment system based on a 24-h dietary recall method using a touch panel computer: application for pregnant women.

本研究开发了一个基于24小时膳食回忆法的盐摄入量电子评估系统。 对该盐摄入量评价系统的有效性进行了评价，并应用于 孕妇的系统。 在203例连续门诊原发性高血压患者（年龄67.8 ± 10.7 24-h UNaCl的平均值为9.7+/-2.9 g/天，盐摄入量评估系统的平均值为9.1+/-2.9 g/天。 本系统估计的盐摄入量与 24-h UNaCl（r= 0.66，p<0.0001）。 在对几个因素进行校正后，所有患者的盐摄入量与24小时UNaCl之间的相关系数为0.72（p<0.001）。 在35名孕妇中，24小时UNaCl为7.7+/-2.5g，根据该系统估计的盐摄入量为7.4+/-2.0g。 相关系数 盐摄入量与24小时尿钠浓度的相关系数为0.47（p<0.04）。 这个系统可能是一个有用的工具，鼓励盐限制在治疗高血压以及怀孕。

An electronic system for salt intake assessment using a 24-h dietary recall method has been developed. We evaluated the validity of this salt intake assessing system and applied this system for pregnant women. In 203 consecutive outpatients with essential hypertension (age 67.8+/-10.7 years; 53.7% men), mean values were 9.7+/-2.9 g/day for 24-h UNaCl and 9.1+/-2.9 g/day for the salt intake assessment system. The salt intake estimated by the present system was significantly correlated with 24-h UNaCl (r= 0.66, p<0.0001). After corrections for several factors, correlation coefficients between salt intake and 24-h UNaCl was 0.72 (p<0.001) in all patients. In 35 pregnant women, 24h-UNaCl was 7.7+/-2.5g and estimated salt intake on the basis of this system was 7.4+/-2.0g. The correlation coefficients between salt intake and 24-h UNaCl was 0.47 (p<0.04). This system may be a useful tool to encourage salt restriction in the treatment of hypertension as well as pregnancy.