Folder/Pen
(n=27)	Folder
(n=26)	SE Diff	t-value
Response rate	55.4	54.2	4.8	0.24
Refusal rate	34.7	34.3	3.6	0.11
Miss rate	9.9	11.5	2.2	0.71
Signed error	7	8.3	3.8	0.36
Absolute error	11	12.6	2.2	0.74