Table 1. Demographic subject data.
| Q1 | Q2 | Q3 | Q4 | p value | |
|---|---|---|---|---|---|
| range (mmHg) | Low- ≤16 | >16 - ≤19 | >19 - ≤26 | ≥26—High | |
| n | 136 | 131 | 133 | 131 | |
| Age (years) | |||||
| Mean ± SD | 72.9 ± 11.6 | 73.4 ± 9.6 | 72.8 ± 10.8 | 74.5 ± 10.5 | 0.5530a |
| range | 23–93 | 25–96 | 38–90 | 24–94 | |
| Sex | |||||
| Men, n (%) | 47 (35) | 48 (37) | 55 (41) | 81 (62) | <0.0001b |
| Women, n (%) | 89 (65) | 83 (63) | 78 (59) | 50 (38) | |
| Disease (n (%)) | |||||
| non-glaucoma | 61 (45) | 51 (39) | 14 (11) | 0 (0) | <0.0001b |
| glaucoma | 75 (55) | 81 (69) | 119 (89) | 131 (100) | |
| SBP (mmHg) | |||||
| Mean ± SD | 138.4 ± 21.8 | 138.5 ± 20.1 | 136.7 ± 17.0 | 144.3 ± 21.4 | 0.0133a |
| range | 85–203 | 94–223 | 85–173 | 101–211 | |
| vs Q1, p = 0.0165c | |||||
| vs Q2, p = 0.0188c | |||||
| vs Q3, p = 0.0022c | |||||
| DBP (mmHg) | |||||
| Mean ± SD | 74.1 ± 11.5 | 74.4 ± 11.8 | 76.4 ± 12.7 | 79.2 ± 14.4 | 0.0037a |
| range | 45–100 | 46–119 | 47–123 | 51–133 | |
| vs Q1, p = 0.0010c | |||||
| vs Q2, p = 0.0023c | |||||
| Pulse rate (/minute) | |||||
| Mean ± SD | 74.4 ± 13.7 | 71.3 ± 11.2 | 76.9 ± 12.7 | 77.1 ± 14.5 | 0.0007a |
| range | 42–120 | 46–114 | 55–131 | 48–128 | |
| vs Q2, p = 0.0004c | vs Q2, p = 0.0003c | ||||
| Duration from last meal (h) | |||||
| Mean ± SD | 3.8 ± 2.4 | 3.9 ± 1.8 | 3.8 ± 2.2 | 3.9 ± 4.0 | 0.1994a |
| range | 1–18 | 1.5–16 | 1–19 | 0.5–14 | |
| Diabetes | 0.1315b | ||||
| Yes, n (%) | 22 (16) | 20 (15) | 30 (23) | 28 (21) | |
| No, n (%) | 114 (84) | 111 (85) | 103 (77) | 103 (79) | |
| Current smoking habit | 0.0657b | ||||
| Yes, n (%) | 8 (6) | 11 (8) | 13 (10) | 16 (12) | |
| No, n (%) | 128 (94) | 120 (92) | 119 (90) | 115 (88) | |
The p values were calculated using the one-way ANOVA (a) or Cochran-Armitage test for trend (b) among the Q1-4 groups or were calculated using the unpaired t-test (c) between each pair of indicated groups. SBP, systolic blood pressure; and DBP, diastolic blood pressure.