Table 1 Discriminatory power and difficulty of the long-menu and Type A formats (n = 88 items)
n | Type A (mean ± S.D. | Long-menu (mean ± S.D.) | Difference between long-menu and type A (95% C.I.) | |
|---|---|---|---|---|
Discriminatory power§ | 88 | 0.210 ± 0.273 | 0.220 ± 0.248 | + 0.010 (− 0.069 to + 0.091) |
Difficulty* | 88 | 77.80% ± 18.83% | 71.45% ± 23.29% | −6.34% (− 9.45% to − 3.23%) |