The peritonsillar abscess (PTA)–rheumatoid arthritis (RA) association remains unclear. Here, the effects of RA on PTA incidence and prognosis are elucidated.
We compared PTA incidence and prognosis of 30,706 RFCIP-registered patients with RA (RA cohort) with matched individuals without RA from another database of 1 million randomly selected people representing Taiwan’s population (non-RA cohort).
The RA cohort had significantly higher PTA incidence [incidence rate ratio (IRR) (95% CI) 1.73 (1.10–2.71), P = 0.017) and cumulative incidence (P = 0.016, Kaplan–Meier curves). Cox regression analyses demonstrated RA cohort to have an estimated 1.72-fold increased PTA risk (95% CI 1.09–2.69, P = 0.019). PTA was more likely within the first 5 years of RA diagnosis (for < 1, 1–5, and ≥ 5 postdiagnosis years, IRRs: 2.67, 2.31, and 1.10, respectively, and P = 0.063, 0.021, and 0.794, respectively; average onset duration: 4.3 ± 3.3 years after RA diagnosis). PTA increased length of hospital stay significantly and risk of complication with deep neck infection nonsignificantly [6.5 ± 4.5 vs 4.6 ± 2.8 days (P = 0.045) and 18.52% vs 7.81% (P = 0.155), respectively]. Moreover, RA-cohort patients not receiving RA therapy exhibited 5.06-fold higher PTA risk than those receiving RA-related therapy (95% CI 1.75–14.62, P = 0.003).
In patients with RA, PTA incidence is the highest within 5 years of RA diagnosis, and RA therapy is essential for reducing PTA risk.
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We extend our gratitude to Chiayi Chang Gung Memorial Hospital’s Health Information and Epidemiology Laboratory for providing valuable comments and assistance in our data analysis. This manuscript was edited by Wallace Academic Editing.
The study was financially supported by grants from the Chang Gung Memorial Hospital, Taiwan (CGRPG6G0021).
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Ding, MC., Tsai, MS., Yang, YH. et al. Patients with comorbid rheumatoid arthritis are predisposed to peritonsillar abscess: real-world evidence. Eur Arch Otorhinolaryngol (2021). https://doi.org/10.1007/s00405-021-06638-3
- Cervical abscess
- Cervical cellulitis
- Risk factor
- Nationwide database
- National health insurance research database