Table 2

Univariable logistic regression of previously diagnosed versus previously undiagnosed primary open angle glaucoma (0=diagnosed 1=undiagnosed)

CharacteristicsOR (95% CI)P value
Age, years0.96 (0.93 to 0.99)0.008
SexMale1.00
Female0.68 (0.42 to 1.09)0.15
Social classProfessional/managerial1.00
Skilled (manual/non-manual)0.57 (0.33 to 0.98)0.04
Semi-skilled/unskilled1.84 (0.93 to 3.63)0.08
EducationNo qualifications1.00
O levels1.44 (0.59 to 3.50)0.42
A levels1.01 (0.59 to 1.74)0.96
Degree0.84 (0.38 to 1.88)0.68
Currently employed?No1.00
Yes2.12 (1.10 to 4.06)0.02
How often do you not have enough money for basics?Never1.00
Seldom/sometimes0.93 (0.56 to 1.54)0.77
POAG typeHTG1.00
NTG11.8 (6.52 to 21.5)<0.0001
IOPg (mm Hg)1.04 (0.99 to 1.09)0.08
Pretreatment IOP (mm Hg)*0.75 (0.69 to 0.82)<0.0001
Axial length (mm)1.12 (0.94 to 1.34)0.21
LogMAR visual acuity0.86 (0.39 to 1.89)0.70
Disc photo CDR ×100.69 (0.55 to 0.87)0.02
CDR asymmetry ×100.74 (0.48 to 1.15)0.19
Visual field (MD)1.14 (1.06 to 1.22)p<0.0001
Central corneal thickness (μm)1.01 (0.99 to 1.01)0.1
Family history of glaucomaNo1.00
Yes0.51 (0.29 to 0.91)0.02
Wears glasses/contactNo1.00
lenses?Yes2.59 (0.30 to 22.4)0.39
Do you have any problemsNo1.00
with eyesight?Yes0.04 (0.02 to 0.08)<0.0001
Pseudophakic in either eyeNo1.00
Yes0.29 (0.16 to 0.53)<0.0001
Absolute refractive error (Dioptres)1.16 (1.01 to 1.33)0.03
Systolic BP (mm Hg)1.00 (0.99 to 1.02)0.60
Diastolic BP (mm Hg)1.01 (0.99 to 1.04)0.32
BMI (kg/m2)1.02 (0.96 to 1.08)0.50
DiabetesNo1.000.59
Yes0.64 (0.13 to 3.22)
Self-reported health statusExcellent/very good1.00
Good1.21 (0.71 to 2.05)0.48
Fair1.04 (0.51 to 2.12)0.93
Poor2.75 (0.70 to 10.9)0.15
  • *Imputed data.

  • CDR, cup/disc ratio; HTG, high tension glaucoma; IOP, intraocular pressure; NTG, normal tension glaucoma; POAG, primary open angle glaucoma.