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Table 3 Adjusted odds ratio (OR) of having pneumonia acquired during radiotherapy (PNRT) among different treatment modalities

From: Incidence of pneumonia and risk factors among patients with head and neck cancer undergoing radiotherapy

Treatment

n

Cases

OR*

(95% CI)

  RT alone

6397

336

1.00

(reference)

  Neck lymph node dissection plus RT

1915

72

0.75

(0.58~0.98)

  CCRT alone

5961

303

1.12

(0.95~1.32)

  Neck lymph node dissection plus CCRT

1274

51

0.88

(0.65~1.20)

  1. *: After controlling for gender, age, level of hospital, stroke, gastroesophageal reflux disease, and Parkinson’s disease.
  2. CCRT concurrent chemoradiotherapy, RT radiotherapy.