Skip to main content

Table 1 Distribution of cases of non-Hodgkin and Hodgkin lymphoma and controls according to selected characteristics

From: The dose-response relationship between tobacco smoking and the risk of lymphomas: a case-control study

  Non-Hodgkin lymphoma Hodgkin lymphoma
Controls (n = 1004) Cases (n = 571) p-valuea Controls (n = 188) Cases (n = 188) p-valuea
No. % No. % No. % No. %
Study center
 Aviano 527 52.5 272 47.6   83 44.1 83 44.1  
 Napoli 359 35.8 215 37.7   56 29.8 56 29.8  
 Catania 118 11.7 84 14.7   49 26.1 49 26.1  
Year of interview
 1999–2002 504 50.2 228 39.9   62 33.0 63 34.0  
 2003–2014 500 49.8 343 60.1   126 67.0 125 66.0  
Gender
 Male 622 62.0 318 55.7   102 54.3 102 54.3  
 Female 382 38.0 253 44.3   86 45.7 86 45.7  
Age (years)
  < 30 107 10.7 38 6.7   66 35.1 78 41.5  
 30–44 198 19.7 99 17.3   79 42.0 67 35.6  
 45–64 366 36.4 260 45.5   35 18.6 35 18.6  
  ≥ 65 333 33.2 174 30.5   8 4.3 8 4.3  
Place of birthb
 North-Center 487 48.6 221 38.8   73 38.8 58 31.0  
 South 515 51.4 349 61.2 p < 0.01 115 61.2 129 69.0 p = 0.13
Education (years)b
  < 7 368 36.6 195 34.2   18 9.6 21 11.2  
 7–11 300 29.9 186 32.6   73 38.8 64 34.2  
  ≥ 12 336 33.5 189 33.2 p = 0.47 97 51.6 102 54.6 p = 0.62
  1. aFisher test
  2. bThe sum does not add up to the total because of missing values