Table 3.

Number of cases [%] selected as having better visibility in the 2AFC study, by use of the LCD with ISD

Data set	GE (n = 40) [%]	Siemens (n = 40) [%]	KonicaMinolta (n = 40) [%]	All cases (n = 120) [%]
Original pixel size	100 μm	70 μm	25 μm	–
Observer A	24 [60.0]	28 [70.0]	30 [75.0]	82 [68.3]
B	25 [62.5]	26 [65.0]	37 [92.5]	88 [73.3]
C	31 [77.5]	33 [82.5]	27 [67.5]	91 [75.8]
D	31 [77.5]	37 [92.5]	31 [77.5]	99 [82.5]
E	33 [82.5]	34 [85.0]	40 [100.0]	107 [89.2]
F	27 [68.5]	28 [70.0]	38 [95.0]	93 [77.5]
G	30 [75.0]	29 [72.5]	35 [87.5]	94 [78.3]
Mean	28.7 [71.8]	30.7 [76.8]	34.0 [85.0]	93.4 [77.9]
95% Cl	65.5, 78.1a	69.4, 84.2a	76.2, 93.8a	72.9, 82.8a

^aStatistically significant (p < 0.01) for the alternative hypothesis “LCD with the ISD has better visibility than that without the ISD”