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. 2003 Jan 28;88(1):47–49. doi: 10.1038/sj.bjc.6600689

Table 1. Lymphyocytic and myeloid leukaemias: age at surgical interventions for adenoidectomy or tonsillectomy.

  Lymphocytic OR (95% CI) Myeloid OR (95% CI)
Adenoidectomy
 No 241/1524 1.0 (ref) 276/1524 1.0 (ref)
 Yes 20/194 0.8 (0.5–1.3) 37/194 1.2 (0.8–1.7)
         
Age at intervention (y)
 <10 4/103 1.0 (ref) 17/103 1.0
 10–20 10/52 4.2 (1.1–16.2) 9/52 1.0 (0.4–2.2)
 20+ 3/16 4.1 (0.2–4.1) 2/16 0.92 (0.2–4.4)
 Age unknown 3/23   9/23  
         
Tonsillectomy
 No 206/1270 1.0 (ref) 244/1270 1.0 (ref)
 Yes 55/449 0.9 (0.7–1.3) 69/449 0.9 (0.6–1.1)
         
Age at intervention (y)
 <10 15/203 1.0 (ref) 28/203 1.0 (ref.)
 10–20 18/118 1.8 (0.8–4.1) 17/118 1.1 (0.6–2.0)
 20+ 15/114 1.5 (0.5–4.0) 16/114 1.0 (0.6–2.3)
 Age unknown 7/14   8/14  

Cases/controls. ORs are age- and gender-adjusted; 95% CI.