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	1.77	294	7	0.95	142	6	0.92
2	1.99	326	4	0.98	149	2	0.97
3	1.49	252	10	0.92	134	7	0.9
4	1.78	295	6	0.96	148	3	0.96
5	1.8	304	13	0.92	146	10	0.87
6	0.38	132	70	0.31	85	43	0.33
7	0.86	181	41	0.63	109	27	0.6
8	1.52	265	19	0.87	137	12	0.84
9	0.79	179	51	0.56	104	28	0.58
10	2.08	342	5	0.97	153	4	0.95
11	1.56	266	13	0.91	131	9	0.87
12	1.96	325	7	0.96	154	4	0.95

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.964 (0)	0.968 (0)
(Ps-Ns)/(Ps+Ns)	0.964 (0)	1 (0)	0.996 (0)
(Pc-Nc)/(Pc+Nc)	0.968 (0)	0.996 (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)	0.831 (0)	0.739 (0.001)
(Ps-Ns)/(Ps+Ns)	0.831 (0)	1 (0)	0.937 (0)
(Pc-Nc)/(Pc+Nc)	0.739 (0.001)	0.937 (0)	1 (0)