a decreasing trendp < 0.00
In the rural area a decreasing trend was shown from 2012 to 2019 ( p < 0.00).
In the rural area a decreasing trend was shown from 2012 to 2019 ( p < 0.00).
In all three surveys, a significant difference ( p < 0.05) was found in sodium availability in the rural area with respect to the urban area, with an increasing trend in the latter ( Figure 2 ).