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Table 2 Keloids associated with osteoporosis stratified by age, gender and comorbidities

From: The association between keloid and osteoporosis: real-world evidence

Variables Patients with keloid Patients without keloid Compared with non-keloid
Osteoporosis PYs Rate Osteoporosis PYs Rate IRR (95% CI) Adjusted HRa (95% CI)
All 178 49,037.42 3.63 587 511,351.32 1.48 3.16 (2.67–3.74)* 2.64 (2.21–3.17)*
Gender
 Men 43 18,664.24 2.30 144 193,172.89 0.75 3.09 (2.19–4.34)* 2.97 (2.04–4.33)*
 Women 135 30,373.18 4.44 443 318,178.43 1.39 3.19 (2.63–3.87)* 2.56 (2.08–3.15)*
Age
 20–49 61 43,388.67 1.41 64 445,735.38 0.14 9.79 (6.89–13.90)* 7.06 (4.93–10.11)*
> 50 117 5648.75 20.71 523 65,615.94 7.97 2.59 (2.13–3.18)* 2.06 (1.67–2.54)*
Comorbidity
 No 9 16,842.54 0.53 40 279,314.00 0.14 3.73 (1.81–7.69)* 4.98 (2.40–10.29)*
 Yes 169 32,194.88 5.25 547 232,037.32 2.36 2.23 (1.87–2.65)* 2.54 (2.11–3.06)*
  1. PYs Person-year; Rate, incidence rate in per 1000 person-years; IRR Incidence rate ratio in per 1000 person-years; 95% CI 95% Confidence interval; HR Hazard ratio
  2. a Model adjusted for age, gender, Charlson Comorbidity Index and relevant comorbidities
  3. * P< 0.001