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. 2020 Jun 16;20:230. doi: 10.1186/s12886-020-01497-8

Table 2.

Comparison of incidence densities of Tinnitus and hazard ratio between with and without Early-onset cataract by demographic characteristics and comorbidity

Early-onset cataract
No Yes
Event PY Rate# Event PY Rate# Crude HR*(95% CI) Adjusted HR (95% CI)
All 194 40,186 4.83 73 9913 7.36 1.53 (1.17, 2.01)** 1.32 (1.00, 1.73)*
Gender
 Women 116 20,373 5.69 41 5043 8.13 1.43 (1.00, 2.05)* 1.25 (0.87, 1.79)
 Men 78 19,813 3.94 32 4869 6.57 1.68 (1.11, 2.53)* 1.41 (0.93, 2.15)
Stratify age
  ≤ 35 4 3872 1.03 8 966 8.28 7.97 (2.40, 26.5)*** 6.04 (1.74, 21.0)**
 36–45 26 9493 2.74 16 2341 6.84 2.50 (1.34, 4.66)** 2.46 (1.31, 4.61)**
 46–55 164 26,821 6.11 49 6606 7.42 1.22 (0.89, 1.68) 1.09 (0.79, 1.50)
Comorbidity
 No 96 27,707 3.46 31 5476 5.66 1.63 (1.09, 2.44)* 1.58 (1.05, 2.37)*
 Yes 98 12,479 7.85 42 4436 9.47 1.21 (0.84, 1.73) 1.20 (0.84, 1.73)
Follow-up time
  ≤ 4 years 113 25,582 4.42 40 6404 6.25 1.42 (0.99, 2.03) 1.13 (0.78, 1.63)
  > 4 years 81 14,604 5.55 33 3509 9.40 1.70 (1.13, 2.54)* 1.62 (1.08, 2.44)*

Rate#, incidence rate, per 1000 person-years; Crude HR*, relative hazard ratio; Adjusted HR: multivariable analysis including age, gender, and comorbidities of vertigo, insomnia, anxiety, and hearing loss; *p < 0.05, **p < 0.01, ***p < 0.001

Comorbidity: Patients with any one of the comorbidities vertigo, insomnia, anxiety, and hearing loss were classified as the comorbidity group

The follow-up time is partitioned into 2 segments (years ≤4, and > 4 years) by median