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	-1.55	1	221	-0.99	1	131	-0.98
2	-1.73	2	248	-0.98	2	137	-0.97
3	-1.36	2	195	-0.98	2	128	-0.97
4	-1.2	2	172	-0.98	2	117	-0.97
5	-1.08	5	158	-0.94	5	112	-0.91
6	0.39	71	16	0.63	71	14	0.67
7	-0.95	13	148	-0.84	13	96	-0.76

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.944 (0.001)	0.952 (0.001)
(Ps-Ns)/(Ps+Ns)	0.944 (0.001)	1 (0)	0.999 (0)
(Pc-Nc)/(Pc+Nc)	0.952 (0.001)	0.999 (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)	0.823 (0.012)	0.823 (0.012)
(Ps-Ns)/(Ps+Ns)	0.823 (0.012)	1 (0.003)	1 (0.003)
(Pc-Nc)/(Pc+Nc)	0.823 (0.012)	1 (0.003)	1 (0.003)