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Table 5 Odds ratios for hospital contacts of survivors of acute lymphoblastic leukemia compared to controls, according to treatment modalities

From: Increased health care utilization by survivors of childhood lymphoblastic leukemia is confined to those treated with cranial or total body irradiation: a case cohort study

  OR 95% CI p-value
At least one hospital contact 1    
  Controls 1   
  Chemotherapy only 1.4 0.9–2.2 0.10
  Cranial irradiation2 2.3 1.5–3.6 < 0.001
  Total body irradiation3 11.0 3.2–50.7 < 0.001
Increased number of hospital contacts 1    
  Controls 1   
  Chemotherapy only 1.1 0.8–1.7 0.53
  Cranial irradiation2 3.9 2.6–5.9 < 0.001
  Total body irradiation3 4.8 1.9–12.3 < 0.001
Increased number of days in hospital 1    
  Controls 1   
  Chemotherapy only 1.2 0.8–1.7 0.43
  Cranial irradiation2 3.7 2.5–5.5 < 0.001
  Total body irradiation3 5.6 2.2–14.3 < 0.001
  1. 1Hospital contacts from 5 years after the diagnosis of ALL, or the corresponding date for the controls, until the end of follow-up. In the case of a relapse, hospital contacts within the first five yeas after diagnosis of relapse were excluded. 2Treated with cranial irradiation in addition to chemotherapy. 3Treated with total body irradiation in addition to chemotherapy. OR = odds ratio, CI = confidence interval.