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. 2015 Nov 9;12(11):14216–14228. doi: 10.3390/ijerph121114216

Figure 8.

Figure 8

Comparison of subjective State-Trait Anxiety Inventory (STAI) scores between the two environments. N = 23, mean ± standard deviation. ** p < 0.01, determined by the Wilcoxon signed-rank test (one sided).