a strong trendp = 0.053
While the difference between 8- and 10-year-olds is not significant (β = 2.167, SE = 1.571, t = 1.416, p = 0.177), the difference between 10-year-olds and adults shows a strong trend of increase (β = 3.250, SE = 1.592, t = 2.041, p = 0.053).