Table 1

Baseline (2008) characteristics of eligible participants included in and excluded from analysis

Variable	Respondents	Non-respondents	P value
Demographic
No. of subjects	186	134	<0.001
Age, year	64.7±7.0	69.4±7.9	<0.001
Gender (M/F)	74/112	45/89	0.257*
Weight, kg	56.4±9.0	56.3±10.5	0.973
Height, cm	155.9±8.2	154.8±8.7	0.224
SBP, mm Hg	135.0±21.8	140.7±21.7	0.023
DBP, mm Hg	72.3±12.8	71.9±12.3	0.767
SE, dioptre	1.1±2.5	1.6±2.2	0.066
Biometric parameter
AL, mm	23.8±5.7	24.8±11.5	0.287
ACD, mm	2.8±0.5	2.8±1.0	0.644
LT, mm	5.8±9.8	7.0±14.2	0.403
IOP, mm Hg	14.1±2.8	13.6±3.0	0.128
TISA500, mm²	0.077±0.05	0.078±0.05	0.919
ARA750, mm	0.158±0.10	0.156±0.09	0.846
IT750, mm	0.450±0.18	0.455±0.18	0.812
Iarea, mm²	1.569±0.48	1.591±0.29	0.631
ACW, mm	11.74±0.44	11.66±0.47	0.089
ACA, mm²	18.94±2.89	17.93±3.34	0.004
LV, μm	573.5±246.2	651.4±278.7	0.008
PD, mm	4.319±1.14	3.97±1.23	0.009
ΔTISA500, mm²	0.218±0.032	0.020±0.029	0.514
ΔARA, mm²	0.045±0.065	0.041±0.054	0.516
ΔIT750, mm	−0.755±0.166	−0.632±0.162	0.509
ΔIarea, mm²	0.271±0.415	0.256±0.267	0.731
ΔACW, mm	0.052±0.197	0.024±0.160	0.178
ΔACA, mm²	−0.707±0.271	−0.644±0.304	0.057
ΔLV, μm	20.4±70.9	11.7±63.3	0.259
ΔPD, mm	−1.678±1.112	−1.241±1.210	0.001

Bold indicates statistical significance.
*Fisher exact probability test.
Δ, light-to-dark changes (dark minus light); ACA, anterior chamber area; ACD, anterior chamber depth; ACW, anterior chamber width; AL, axial length; ARA, angle recess area;BP, blood pressure;DBP, diastolic blood pressure; IOP, intraocular pressure; IT750, iris thickness at 750 µm; Iarea, iris area; LT, lens thickness; LV, lens vault; PD, pupil diameter; SBP, systolic blood pressure; SE, spherical equivalent; TISA500, trabecular iris space area at 500 µm.