Table 5 Univariable and multivariable-adjusted logistic regression analyses of choroidal thickness in relation to the presence of complete PVD (vs. partial PVD) stratified by sex^‡.

	Univariable OR (95% CI)	P value	Age-adjusted OR (95% CI)*	P value	Multivariable-adjusted OR (95% CI)^†	P value
Men (n = 94)
Choroidal thickness
C1 (n = 41)	1.0 (ref)	P_trend = 0.51	1.0 (ref)	P_trend = 0.69	1.0 (ref)	P_trend = 0.97
C2 (n = 46)	0.59 (0.22–1.59)		0.60 (0.21–1.74)		0.78 (0.25–2.39)
C3 (n = 7)	0.97 (0.16–5.69)		1.35 (0.19–9.53)		1.43 (0.19–11.08)
Per 10 μm	0.99 (0.93–1.06)	0.79	1.00 (0.92–1.07)	0.91	1.02 (0.95–1.10)	0.57
Axial length
A1 (n = 59)	1.0 (ref)	P_trend = 0.37	1.0 (ref)	P_trend = 0.17	1.0 (ref)	P_trend = 0.16
A2 (n = 30)	0.68 (0.13–3.43)		2.44 (0.82–7.27)		2.50 (0.82–7.60)
A3 (n = 5)	1.25 (0.29–5.39)		1.71 (0.16–18.47)		1.89 (0.15–23.92)
Per 1 mm	1.42 (0.96–2.10)	0.08	1.55 (1.01–2.38)	0.04	1.63 (1.02–2.58)	0.04
Women (n = 76)
Choroidal thickness
C1 (n = 30)	1.0 (ref)	P_trend = 0.04	1.0 (ref)	P_trend = 0.10	1.0 (ref)	P_trend = 0.41
C2 (n = 37)	0.27 (0.09–0.79)		0.34 (0.10–1.24)		0.51 (0.13–2.05)
C3 (n = 9)	0.33 (0.06–1.84)		0.31 (0.04–2.32)		0.54 (0.06–4.57)
Per 10 μm	0.91 (0.84–0.99)	0.03	0.93 (0.85–1.01)	0.08	0.96 (0.87–1.06)	0.38
Axial length
A1 (n = 60)	1.0 (ref)	P_trend = 0.26	1.0 (ref)	P_trend = 0.26	1.0 (ref)	P_trend = 0.78
A2 (n = 11)	0.95 (0.23–4.01)		0.95 (0.23–4.01)		1.49 (0.23–9.68)
A3 (n = 5)	3.79 (0.58–24.75)		3.79 (0.58–24.7)		1.18 (1.07–11.6)
Per 1 mm	1.50 (0.98–2.28)	0.06	1.65 (0.99–2.77)	0.06	1.45 (0.81–2.61)	0.22

CI confidence interval, OR odds ratio, PVD posterior vitreous detachment, ref reference, SD standard deviation.
In women, the cut-off point was 51.0–177.1 μm (C1), 177.2–298.7 μm (C2), and 298.8–459.0 μm (C3) for choroidal thickness and 26.00–27.86 mm (A1), 27.87–29.68 mm (A2), and 29.69–31.40 mm (A3) for axial length.
P values less than the statistically significant level (= 0.05) are marked in bold.
*Adjusted for age (in years).
^†Adjusted for age (in years) and axial length for choroidal thickness or choroidal thickness for axial length.
^‡Choroidal thickness and axial length were classified into three groups based on the same range of each variable.
In men, the cut-off point was 76.0–203.6 μm (C1), 203.7–330.3 μm (C2), and 330.4–459.0 μm (C3) for choroidal thickness and 26.00–27.82 mm (A1), 27.83–29.61 mm (A2), and 29.62–31.40 mm (A3) for axial length.

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