Table 1

Comparison of the demographic characteristics and comorbidities between the atopic keratoconjunctivitis (AKC) and control groups

AKC
(N=171 019)
Controls
(N=171 019)
P value
Age (years; mean ± SD)30.32±18.5030.32±18.501.0000
Number (%)Number (%)
Age group (years)
 <1234 958 (20.44)34 958 (20.44)1.0000
 12–1925 470 (14.89)25 470 (14.89)
 20–2933 397 (19.53)33 397 (19.53)
 30–3928 620 (16.73)28 620 (16.73)
 ≥4048 574 (28.40)48 574 (28.40)
Sex
 Male70 942 (41.48)70 942 (41.48)1.0000
 Female100 077 (58.52)100 077 (58.52)
City status
 Metropolis119 482 (69.86)123 864 (72.43)<0.0001
 Satellite14 559 (8.51)15 273 (8.93)
 Rural36 978 (21.62)31 882 (18.64)
Baseline comorbidity
 Diabetes mellitus1535 (0.90)1535 (0.90)1.0000
 Chronic renal disease27 (0.02)27 (0.02)1.0000
 Topical steroid ophthalmic agent146 822 (85.85)25 574 (14.95)<0.0001
 Lid margin disease917 (0.54)310 (0.18)<0.0001
 Keratoconjunctivitis sicca675 (0.39)241 (0.14)<0.0001
 Ocular blunt trauma357 (0.21)129 (0.08)<0.0001
 Post-corneal transplantation43 (0.03)22 (0.01)0.0092
Number of corneal ulcer diagnosedN=2018
N (%)
N=1481
N (%)
 Marginal corneal ulcer115 (5.70)69 (4.66)0.1734
 Infectious corneal ulcer1903 (94.30)1412 (95.34)
  • The demographic characteristics and comorbidities between the AKC and control groups were compared using Pearson χ2 test.