Table 4: Concordance and chi² test for qualitative variables.

Concordance and Test	Q1 N=36	Q2 N=36	Q3 N=36	Q6 N=12	Q7 N=12
S1	83.3%	94.4%	66.7%	83.3%	50.0%
	0.370	0.110	0.049	1.000	0.509
S2	83.3%	83.3%	94.4%	58.3%	58.3%
	0.310	0.044	<0.001	0.470	0.470
S3	83.3%	69.4%	86.1%	58.3%	58.3%
	1.000	0.064	<0.001	0.576	0.576
S4	66.7%	77.8%	75.0%	58.3	50.0%
	1.000	0.207	0.020	0.470	1.000
S5	72.2%	80.6%	72.2%	83.3%	83.3%
	0.014	0.001	0.017	0.061	0.061