Table 4.

Accuracy scores and confidence ratings for evaluators by specialty

	First phase—two images: mean ± SD	Second phase—three images: mean ± SD	Difference	p
Correct score	Radiology (n = 17)
All cases	19.65 ± 5.10	26.82 ± 4.60	+7.17 (21.1 %)	<0.001
Easy	9.41 ± 1.12	10.12 ± 0.60	+0.71 (6.5 %)	0.018
Intermediate	7.71 ± 2.66	9.88 ± 2.03	+2.17 (16.7 %)	<0.001
Difficult	2.53 ± 2.15	6.82 ± 2.79	+4.29 (42.9 %)	<0.001
Confidence rating
All cases	118.53 ± 16.02	134.24 ± 15.63	+15.71	<0.001
Easy	42.06 ± 5.66	47.24 ± 5.29	+5.21	<0.001
Intermediate	43.06 ± 6.28	49.24 ± 5.85	+6.18	<0.001
Difficult	33.41 ± 5.97	37.76 ± 6.00	+4.35	0.029
Correct score	General orthopedics (n = 30)
All cases	19.87 ± 4.61	26.17 ± 4.14	+6.30 (18.6 %)	<0.001
Easy	9.50 ± 1.11	9.97 ± 1.03	+0.47 (4.2 %)	0.014
Intermediate	7.57 ± 2.16	9.10 ± 1.83	+1.53 (11.8 %)	<0.001
Difficult	2.80 ± 2.11	7.10 ± 1.94	+4.30 (43.0 %)	<0.001
Confidence rating
All cases	112.93 ± 19.59	132.27 ± 21.37	+19.34	<0.001
Easy	41.90 ± 6.70	47.10 ± 6.47	+5.20	<0.001
Intermediate	40.37 ± 8.07	48.90 ± 7.98	+8.53	<0.001
Difficult	30.67 ± 6.61	36.27 ± 7.59	+5.60	<0.001
Correct score	Orthopedic hand surgery (n = 18)
All cases	20.50 ± 3.93	26.17 ± 3.38	+5.67 (16.7 %)	<0.001
Easy	9.56 ± 1.10	10.00 ± 0.97	+0.44 (4.1 %)	0.134*
Intermediate	7.77 ± 1.99	9.72 ± 1.64	+1.95 (14.9 %)	0.001
Difficult	3.17 ± 1.86	6.44 ± 1.82	+3.27 (32.7 %)	<0.001
Confidence rating
All cases	117.28 ± 14.78	137.72 ± 12.96	+20.44	<0.001
Easy	43.67 ± 5.83	49.44 ± 3.50	+5.77	<0.001
Intermediate	42.50 ± 6.20	50.06 ± 6.67	+7.56	<0.001
Difficult	31.11 ± 3.89	38.22 ± 4.66	+7.11	<0.001

^*Not significant