Table 3. Multivariate logistic regression analyses.

	Q1	Q2	Q3	Q4
Entire model
p value	—	0.7342	<0.0001	<0.0001
Age (years)
p value	—	0.7012	0.5806	0.4297
OR (95% CI)/range	1	1.51 (0.18–12.95)	1.82 (0.22–15.61)	2.81 (0.21–36.22)
Sex
p value	—	0.8988	0.8406	0.0111
OR (95% CI) men/women	1	0.96 (0.55–1.69)	0.94 (0.50–1.75)	2.35 (1.22–4.67)
Disease (n (%))
p value	—	0.3478	<0.0001	<0.0001
OR (95% CI) glaucoma/non-glaucoma	1	1.28 (0.77–2.15)	7.64 (3.94–15.73)	1.42x10e+11 (50.95-)
SBP (mmHg)
p value	—	0.6584	0.0193	0.2153
OR (95% CI) /range	1	0.62 (0.07–5.17)	0.09 (0.01–0.68)	0.25 (0.03–2.24)
DBP (mmHg)
p value	—	0.3013	0.0292	0.1377
OR (95% CI) /range	1	3.06 (0.37–26.27)	12.05 (1.28–129.62)	8.77 (0.50–167.67)
Pulse rate (/min.)
p value	—	0.0202	0.4256	0.3495
OR (95% CI) /range	1	0.14 (0.03–0.74)	2.17 (0.33–14.95)	2.66 (0.34–21.60)
Duration from last meal (hours)
p value	—	0.5100	0.6037	0.7982
OR (95% CI) /range	1	1.96 (0.26–15.33)	0.56 (0.05–4.85)	1.59 (0.05–66.07)
Diabetes
p value	—	0.8595	0.2153	0.7603
OR (95% CI) y/n	1	0.94 (0.47–1.87)	1.56 (0.77–3.21)	1.14 (0.51–2.63)
Current smoking habit
p value	—	0.2782	0.1803	0.1207
OR (95% CI) y/n	1	1.79 (0.63–5.40)	2.25 (0.69–7.90)	2.86 (0.77–14.00)
dROM test (U. Carr)
p value	—	0.9337	0.3642	0.1002
OR (95% CI) /range	1	1.08 (0.28–6.43)	1.91 (0.47–7.88)	3.97 (0.77–21.50)
BAP test (μmol/L)
p value	—	0.4528	0.0261	0.0018
OR (95% CI) /range	1	0.56 (0.12–2.53)	0.06 (0.00–0.72)	0.04 (0.01–0.31)
SH test (μmol/L)
p value	—	0.5839	0.5575	0.9837
OR (95% CI) /range	1	0.63 (0.12–3.32)	1.82 (0.25–13.70)	0.98 (0.12–8.26)

To adjust the difference in background characteristics among the IOP groups, p values were calculated using multivariate logistic regression analyses to compare the Q1 and the Q2, Q3, and Q4 groups. For calculation of the odds ratios, the Q1 group was the reference.

SBP, systolic blood pressure; DBP, diastolic blood pressure; ROM, diacron reactive oxygen metabolites; BAP, biological antioxidant potential; SH, sulfhydryl; OR, odds ratio; CI, confidence interval.