Research Article
Efficacy of Surgery in Patients with Stage I Primary Parotid Gland Lymphoma: A Population-Based Study
Table 1
Comparison of baseline data.
| | Characteristics | Level | Overall | No surgery | Surgery | | | N = 918 | N = 262 (28.5) | N = 656 (71.5) |
| | Age (%) | ≤65 | 491 (53.5) | 125 (25.5) | 366 (74.5) | 0.032 | | >65 | 427 (46.5) | 137 (32.1) | 290 (67.9) | |
| | Sex (%) | Female | 564 (61.4) | 166 (29.4) | 398 (70.6) | 0.496 | | Male | 354 (38.6) | 96 (27.1) | 258 (72.9) | |
| | Race (%) | White | 774 (84.3) | 220 (28.4) | 554 (71.6) | 0.545 | | Black | 82 (8.9) | 21 (25.6) | 61 (74.4) | | | Other | 62 (6.8) | 21 (33.9) | 41 (66.1) | |
| | Marital status (%) | No married | 377 (41.1) | 122 (32.4) | 255 (67.6) | 0.039 | | Married | 541 (58.9) | 140 (25.9) | 401 (74.1) | |
| | Year of diagnosis (%) | 1998–2003 | 270 (29.4) | 55 (20.4) | 215 (79.6) | <0.001 | | 2004–2009 | 322 (35.1) | 91 (28.3) | 231 (71.7) | | | 2010–2015 | 326 (35.5) | 116 (35.6) | 210 (64.4) | |
| | Histology (%) | MALT | 427 (46.5) | 97 (22.7) | 330 (77.3) | <0.001 | | DLBCL | 156 (17.0) | 66 (42.3) | 90 (57.7) | | | FL | 194 (21.1) | 43 (22.2) | 151 (77.8) | | | Other | 141 (15.4) | 56 (39.7) | 85 (60.3) | |
| | Laterality (%) | Right | 443 (48.3) | 116 (26.2) | 327 (73.8) | 0.030 | | Left | 456 (49.7) | 136 (29.8) | 320 (70.2) | | | Bilateral | 19 (2.1) | 10 (52.6) | 9 (47.4) | |
| | Radiation (%) | No | 482 (52.5) | 144 (29.9) | 338 (70.1) | 0.385 | | Yes | 436 (47.5) | 118 (27.1) | 318 (72.9) | |
| | Chemotherapy (%) | No | 637 (69.4) | 162 (25.4) | 475 (74.6) | 0.002 | | Yes | 281 (30.6) | 100 (35.6) | 181 (64.4) | |
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MALT: mucosal-associated lymphoid tissue, DLBCL: diffuse large B-cell lymphoma, and FL: follicular lymphoma.
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