Table 2.

Bland–Altman Analysis and Paired t-Tests Showing the Agreement in OCT Retinal Thickness Derived from Phase 6.5 and Phase 7.0

			Limits of Agreement
Retinal Thickness (µm)	Mean Difference (95% CI)	SD	Lower (95% CI)	Upper (95% CI)	tstat	P
Healthy subjects (n = 105)
Foveal circle	+3.00 (+1.64, +4.36)	7.00	–10.72 (–13.06, –8.37)	+16.72 (+14.37, +19.06)	+4.39	<0.001
Parafoveal rim	+9.74 (+8.41, +11.08)	6.89	–3.76 (–6.07, –1.45)	+23.25 (+20.94, +25.56)	+14.49	<0.001
Superior-hemi	+10.04 (+8.62, +11.45)	7.31	–4.28 (–6.74, –1.83)	+24.36 (+21.91, +26.81)	+14.08	<0.001
Inferior-hemi	+9.50 (+8.18, +10.81)	6.81	–3.87 (–6.13, –1.56)	+22.84 (+20.55, +25.12)	+14.29	<0.001
Tempo	+9.71 (+8.27, +11.16)	7.45	–4.88 (–7.38, –2.38)	+24.31 (+21.81, +26.81)	+13.37	<0.001
Superior	+10.02 (+8.56, +11.48)	7.56	–4.80 (–7.33, –2.26)	+24.84 (+22.30, +27.37)	+13.58	<0.001
Nasal	+9.90 (+8.44, +11.37)	7.56	–4.91 (–7.45, –2.38)	+24.72 (+22.19, +27.26)	+13.42	<0.001
Inferior	+9.46 (+8.12, +10.79)	6.90	–4.07 (–6.38, –1.75)	+22.98 (+20.67, +25.30)	+14.04	<0.001
Retinal disease (n = 72)
Foveal circle	+3.65 (+1.93, +5.37)	7.33	–10.71 (–13.69, –7.74)	+18.02 (+15.04, +21.00)	+4.23	<0.001
Parafoveal rim	+6.40 (+5.33, +7.47)	4.56	–2.54 (–4.40, –0.69)	+15.35 (+13.50, +17.20)	+11.90	<0.001
Superior-hemi	+6.69 (+5.40, +7.99)	5.52	–4.13 (–6.37, –1.89)	+17.52 (+15.28, +19.76)	+10.29	<0.001
Inferior-hemi	+6.19 (+4.94, +7.45)	5.34	–4.28 (–6.45, –2.11)	+16.67 (+14.50, +18.84)	+9.84	<0.001
Tempo	+6.64 (+5.27, +8.01)	5.85	–4.82 (–7.20, –2.45)	+18.10 (+15.73, +20.48)	+9.63	<0.001
Superior	+6.43 (+4.93, +7.93)	6.38	–6.08 (–8.67, –3.49)	+18.94 (+16.35, +21.53)	+8.55	<0.001
Nasal	+6.57 (+5.06, +8.08)	6.43	–6.04 (–8.66, –3.43)	+19.18 (+16.57, +21.79)	+8.66	<0.001
Inferior	+5.96 (+4.58, +7.34)	5.89	–5.58 (–7.97, –3.19)	+17.50 (+15.11, +19.89)	+8.59	<0.001