Table 1: Average Ex-GRADE Scores Across Three Independent Readers - In-Office Teeth Whitening Literature

Paper	1	2	3	4	5	6	7	8	Total
1	2.00	3.00	2.00	2.00	4.00	3.00	2.00	3.00	21.00
2	1.33	2.67	2.33	2.00	3.67	3.00	2.33	3.00	20.33
3	1.00	2.33	2.00	2.00	4.00	3.33	3.00	3.00	20.67
4	2.00	3.00	2.00	2.00	4.00	4.00	3.00	3.00	23.00
5	2.00	3.00	2.00	2.00	3.33	2.33	2.00	3.00	19.67
6	2.00	1.00	1.33	2.00	3.67	4.00	4.00	3.67	21.67
7	1.67	2.00	2.00	2.00	4.00	4.00	2.00	3.00	20.67
8	3.00	1.67	2.00	2.00	4.00	3.00	2.33	2.00	20.00
Mean	1.88	2.33	1.96	2.00	3.83	3.33	2.58	2.96	20.88
St. Dev	0.59	0.73	0.28	0.00	0.25	0.62	0.71	0.45	1.05
(Friedman non-parametric ANOVA equivalent, p < 0.0001)