Table 9.
Epidemiological and clinical characteristics of patients in the two retrospective studies and two case report papers involving two subjects with groove adenocarcinoma
| Author[Ref.] yr | Type of study | Time interval of patient enrollment | No. of patients | Age (yr) | Alcohol drinkers | ||
| Total | Males | Females | Mean (range) | ||||
| Suehara et al[20] 1998 | Case report | 1995 | 1 | 1 | - | 61 | Yes |
| Gabata et al[30] 2003 | Retrospective | 1998-2001 | 9 | 4 (44.4%) | 5 (55.6%) | 72 (56-87) | NR |
| Tan et al[38] 2006 | Case report | NR | 1 | - | 1 | 69 | NR |
| Ishigami et al[6] 2010 | Retrospective | 2001-2008 | 7 | 6 (85.7%) | 1 (14.3%) | 70 (57-80) | NR |
NR: Not reported.