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. 2012 Oct 4;12:151. doi: 10.1186/1471-2288-12-151

Table 1.

Summary statistics of baseline predictors and follow-up data for OHTS and EGPS, where categorical variables are summarized as counts and proportions, while the continuous variables are summarized in means and standard deviations (SD).

Variables OHTS (N = 1600) EGPS (N = 971)
Baseline predictors
 
 
TRT
795 (49.7%)
487 (50.2%)
Male
687 (42.9%)
445 (45.8%)
Black
396 (24.8%)
1 (0.1%)
AGE (decades)
5.56 (0.96)
5.70 (1.02)
IOP0 (mmHg)
24.9 (2.69)
23.4 (1.62)
CCT (μm)
572.6 (38.5)
573.3 (37.5)
PSD (dB)
1.91 (0.21)
2.00 (0.52)
VCD
0.39 (0.19)
0.32 (0.14)
BB
71 (4.4%)
64 (6.6%)
CHB
190 (11.9%)
66 (6.8%)
DM
188 (11.8%)
55 (5.7%)
Heart
99 (6.2%)
109 (11.2%)
HBP
606 (37.9%)
279 (28.7%)
Post-randomization IOP
 
 
Mean (mmHg)
21.44 (3.45)
19.73 (2.57)
SD (mmHg)
2.27 (1.04)
2.22 (1.03)
Median #visits (min-max)
13 (2–16)
9 (2–10)
POAG 146 (9.1%) 107 (11.0%)