Evaluation of specific health guidance in small municipality using 7 years data of National Health Insurance database.

Small municipalities have few users with specific health guidance, which makes accurate evaluation difficult. This study verified the effectiveness of specific health guidance using data from specific health checkups and specific health guidance from a municipality in Gifu Prefecture over 7 years. The data were provided by Kokuho Database (KDB; National Health Insurance database) system and included 3,786 individuals who underwent a specific health checkup for the first time between 2008 and 2014, followed by another check the subsequent year. I calculated the differences in weight, body mass index (BMI), and waist circumference from the year of the health check to the weight, BMI, and waist circumference between the initial and the following year's checks based on health guidance usage status. I also evaluated whether there was a difference in the median and metabolic syndrome status in the following year. Weight, BMI, and waist circumference improvements were observed in the group that received health guidance at both incentive and active support groups. In the incentive support group, less than 40% of those who went from the preliminary group became the non-applicable group and more than 40% of those who went from applicable group also became the non-applicable group. In the active support group, less than 80% of those who moved from the preliminary group became the non-applicable group, while less than 30% of those who went from the applicable group also became the non-applicable group.