Table 3.

Diagnostic accuracies of the iPhone and LCD monitor

Raters	Sensitivity		p valuea	Specificity		p valuea	Time to complete a single session (min)		Mobile internet speed (Mbps, mean)
	iPhone	LCD		iPhone	LCD		iPhone	LCD
1	0.93	0.93	1.000	0.95	0.97	0.317	67	52	4.8
2	0.85	0.95	0.034	0.85	0.97	0.035	72	64	6.4
3	0.82	0.92	0.014	0.95	0.95	1.000	60	46	5.2
4	0.88	0.92	0.317	0.98	0.97	0.564	85	72	7.8
5	0.85	0.82	0.480	0.93	0.93	1.000	76	75	3.1b
6	0.93	0.93	1.000	0.97	0.97	1.000	90	59	5.9
7	0.97	0.87	0.034	0.95	0.95	1.000	95	50	5.5
8	0.92	0.95	0.480	0.92	0.92	1.000	88	72	6.1
9	0.93	0.97	0.317	0.93	0.93	1.000	100	76	3.7b
10	0.93	0.92	0.564	0.97	0.97	1.000	76	52	7.6
11	0.93	0.87	0.046	0.97	0.98	0.564	81	65	4.9
12	0.88	0.85	0.480	0.97	1.00	0.157	75	62	4.6
13	0.93	0.92	0.564	0.98	0.97	0.317	80	68	3.3b
14	0.93	0.88	0.180	0.92	0.95	0.414	69	49	5.1
15	0.93	0.97	0.317	0.93	0.93	1.000	72	70	4.1
16	0.93	0.92	0.564	0.97	0.97	1.000	83	66	7
Overall, mean (CI)	0.91 (0.89–0.93	0.91 (0.89–0.93)	1.000	0.95 (0.93–0.96)	0.96 (0.94–0.97)	0.138	79.3 (73.7–85.0)	62.4 (57.1–67.6)	5.3 (4.8–5.8)

LCD liquid crystal display, CI 95 % confidence interval

^aCalculated by McNemar’s test

^bMobile Internet speed was slower than 4 Mbps