Table 1.
Authors | Year | Location | Study type | Sample Size (cases/controls) (Cohort size/oral cancer cases)∗∗ |
Quality assessment∗ | Mean age of cases | Adjustment for smoking and alcohol |
---|---|---|---|---|---|---|---|
Sankaranarayanan et al. [29] | 1989 | India | Case-control | 228/453 | Moderate | n/a | Smoking and alcohol |
Sankaranarayanan et al. [30] | 1989 | India | Case-control | 187/895 | Moderate | n/a | Smoking and alcohol |
Goud et al. [32] | 1990 | India | Case-control | 102/102 | Weak | 53 | No |
Nandakumar et al. [33] | 1990 | India | Case-control | 348/348 | Moderate | 54.8 | No |
Sankaranarayanan et al. [31] | 1990 | India | Case-control | 414/895 | Moderate | n/a | Smoking and alcohol |
Rao et al. [34] | 1994 | India | Case-control | 713/635 | Moderate | 50.35 | Smoking and alcohol |
Khan et al. [35] | 1995 | Pakistan | Case-control | 24/24 | Moderate | 54 | No |
Wasnik et al. [36] | 1998 | India | Case-control | 123/246 | Moderate | n/a | No |
Dikshit and Kanhere [37] | 2000 | India | Case-control | 558/260 | Moderate | n/a | Smoking |
Merchant et al. [38] | 2000 | Pakistan | Case-control | 79/149 | Moderate | 49 | Smoking and alcohol |
Balaram et al. [39] | 2002 | India | Case-control | 591/582 | Moderate | n/a | No |
Znaor et al. [40] | 2003 | India | Case-control | 1563/3638 | Moderate | n/a | Smoking and alcohol |
Subapriya et al. [41] | 2007 | India | Case-control | 388/388 | Moderate | 50.85 | No |
Gangane et al. [42] | 2007 | India | Case-control | 140/380 | Weak | n/a | No |
Basu et al. [43] | 2008 | India | Case-control | 110/110 | Weak | n/a | No |
Muwonge et al. [44] | 2008 | India | Case-control | 282/1410 | Moderate | n/a | Smoking and alcohol |
Jayalekshmi et al. [45] | 2009 | India | Cohort study | 79593/92∗∗ | Moderate | n/a | No |
Jayalekshmi et al. [46] | 2011 | India | Cohort study | 66277/160∗∗ | Moderate | n/a | No |
Pednekar et al. [47] | 2011 | India | Cohort study | 87222/1267∗∗ | Moderate | n/a | No |
Madani et al. [48] | 2012 | India | Case-control | 350/350 | Moderate | n/a | Smoking and alcohol |
Ray et al. [49] | 2013 | India | Case-control | 698/948 | Weak | n/a | No |
∗Based on the “Effective Public Health Project Quality Assessment Tool for Quantitative Studies”.
∗∗Size of the cohort and the number of oral cancer cases in the cohort.