Acinic cell cancer (n = 59) | 4/22 | 0.63 | 0.19 to 2.10 | 13/41 | 1.05 | 0.47 to 2.36 | 5/37 | 0.46 | 0.16 to 1.33 | 16/68 | 0.74 | 0.36 to 1.52 |
Mucoepidermoid cancer (n = 49) | 6/20 | 0.92 | 0.33 to 2.57 | 7/34 | 0.66 | 0.26 to 1.67 | 8/34 | 0.76 | 0.32 to 1.80 | 14/61 | 0.72 | 0.35 to 1.46 |
Adenocarcinoma (n = 50) | 5/31 | 0.61 | 0.21 to 1.78 | 8/23 | 1.23 | 0.49 to 3.13 | 12/34 | 1.50 | 0.67 to 3.38 | 19/60 | 1.27 | 0.64 to 2.52 |
Adenocystic cancer (n = 58) | 10/34 | 1.23 | 0.51 to 2.98 | 11/37 | 1.05 | 0.46 to 2.40 | 11/50 | 0.83 | 0.38 to 1.84 | 25/85 | 1.07 | 0.57 to 2.02 |
Squamous cell cancer (n = 13) | 2/7 | 1.71 | 0.18 to 16.0 | 3/3 | 7.36 | 0.85 to 63.6 | 3/3 | 7.93 | 0.93 to 67.7 | 5/10 | 4.41 | 0.77 to 25.4 |
Undifferentiated cancer (n = 16) | 2/3 | 3.65 | 0.45 to 29.9 | 0/9 | – | – | 4/9 | 2.17 | 0.48 to 9.79 | 5/14 | 1.53 | 0.42 to 5.61 |
All cancer (n = 245) | 29/117 | 0.92 | 0.57 to 1.47 | 42/147 | 1.00 | 0.66 to 1.51 | 43/167 | 0.98 | 0.66 to 1.45 | 84/298 | 1.01 | 0.73 to 1.39 |
Non-Hodgkin’s lymphoma (1) | 0/0 | – | – | 0/0 | – | – | 1/1 | – | – | 1/1 | – | – |
Adenoma (n = 1) | 0/0 | – | – | 0/0 | – | – | 0/1 | – | – | 0/1 | – | – |
Pleomorphic adenoma (n = 17) | 2/6 | 1.96 | 0.28 to 14.0 | 3/7 | 2.51 | 0.40 to 15.6 | 4/10 | 1.93 | 0.45 to 8.31 | 6/15 | 2.03 | 0.55 to 7.50 |
Sarcoma (n = 2) | 0/1 | – | – | 0/0 | – | – | 0/1 | – | – | 0/2 | – | – |
Other (n = 1) | 0/0 | – | – | 0/1 | – | – | 0/2 | – | – | 0/2 | – | – |