Table 3.

Bland–Altman Analysis and Paired t-Tests Showing the Agreement Between SRVD (Phase 6.5) and SVCD (Phase 7.0)

			Limits of Agreement
SVCD – SRVD (% pixels)	Mean Difference (95% CI)	SD	Lower (95% CI)	Upper (95% CI)	tstat	P
Healthy subjects (n = 105)
Whole retina	–4.34 (–4.62, –4.06)	1.45	–7.19 (–7.68, –6.70)	–1.50 (–1.98, –1.01)	–30.64	<0.001
Foveal circle	–6.60 (–7.01, –6.19)	2.12	–10.74 (–11.45, –10.03)	–2.45 (–3.16, –1.74)	–31.95	<0.001
Parafoveal rim	–4.11 (–4.39, –3.82)	1.47	–7.00 (–7.49, –6.50)	–1.22 (–1.71, –0.73)	–28.57	<0.001
Superior-hemi	–4.05 (–4.36, –3.75)	1.57	–7.14 (–7.66, –6.61)	–0.97 (–1.50, –0.44)	–26.40	<0.001
Inferior-hemi	–4.17 (–4.47, –3.87)	1.54	–7.19 (–7.71, –6.67)	–1.15 (–1.67, –0.64)	–27.76	<0.001
Tempo	–4.36 (–4.69, –4.02)	1.74	–7.77 (–8.35, –7.18)	–0.95 (–1.53, –0.36)	–25.67	<0.001
Superior	–3.89 (–4.20, –3.59)	1.58	–7.00 (–7.53, –6.47)	–0.79 (–1.32, –0.26)	–25.20	<0.001
Nasal	–4.29 (–4.62, –3.97)	1.68	–7.59 (–8.15, –7.03)	–0.99 (–1.56, –0.43)	–26.14	<0.001
Inferior	–4.02 (–4.33, –3.70)	1.64	–7.23 (–7.78, –6.68)	–0.80 (–1.35, –0.25)	–25.07	<0.001
Retinal disease (n = 72)
Whole retina	–4.99 (–5.49, –4.49)	2.15	–9.20 (–10.08, –8.33)	–0.78 (–1.65, +0.09)	–19.70	<0.001
Foveal circle	–7.65 (–8.51, –6.78)	3.68	–14.85 (–16.35, –13.36)	–0.44 (–1.93, +1.06)	–17.64	<0.001
Parafoveal rim	–4.68 (–5.19, –4.18)	2.15	–8.90 (–9.78, –8.03)	–0.46 (–1.34, +0.41)	–18.45	<0.001
Superior-hemi	–4.87 (–5.44, –4.30)	2.43	–9.63 (–10.62, –8.64)	–0.10 (–1.09, +0.89)	–16.99	<0.001
Inferior-hemi	–4.51 (–5.11, –3.91)	2.55	–9.51 (–10.54, –8.47)	+0.48 (–0.55, +1.52)	–15.03	<0.001
Tempo	–4.96 (–5.60, –4.33)	2.71	–10.27 (–11.37, –9.17)	+0.35 (–0.75, +1.45)	–15.55	<0.001
Superior	–4.73 (–5.43, –4.03)	2.97	–10.55 (–11.76, –9.35)	+1.09 (–0.11, +2.30)	–13.51	<0.001
Nasal	–4.45 (–4.97, –3.93)	2.22	–8.81 (–9.71, –7.91)	–0.10 (–1.00, +0.80)	–17.00	<0.001
Inferior	–4.59 (–5.23, –3.95)	2.72	–9.93 (–11.03, –8.82)	+0.75 (–0.36, +1.85)	–14.30	<0.001