Summary of survey scores (median of Likert score was subtracted)
Question	mean	Sum of positives (Ps)	Sum of negatives (Ns)	(Ps-Ns)/(Ps+Ns)	Count of positives (Pc)	Count of negatives (Nc)	(Pc-Nc)/(Pc+Nc)
1	-1.51	2	247	-0.98	2	148	-0.97
2	-1.73	2	282	-0.99	2	156	-0.97
3	-1.34	2	219	-0.98	2	145	-0.97
4	-1.14	3	188	-0.97	3	126	-0.95
5	-1.02	7	173	-0.92	7	122	-0.89
6	-0.38	19	81	-0.62	17	81	-0.65
7	-0.95	14	168	-0.85	14	111	-0.78

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.907 (0.005)	0.911 (0.004)
(Ps-Ns)/(Ps+Ns)	0.907 (0.005)	1 (0)	0.976 (0)
(Pc-Nc)/(Pc+Nc)	0.911 (0.004)	0.976 (0)	1 (0)

Kendall tau rank correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.976 (0.002)	0.926 (0.005)
(Ps-Ns)/(Ps+Ns)	0.976 (0.002)	1 (0.002)	0.949 (0.004)
(Pc-Nc)/(Pc+Nc)	0.926 (0.005)	0.949 (0.004)	1 (0.003)