Table 1.
The List of Candidate Gene-Based Association Studies Included in the Meta-Analysis along with the Study Numbers, First Author, Year of Publication, Covariate Counts and Reference Urls for PubMed Search
| First Author Year | Study Number | Number of Cases | Number of Controls | Smokers in Cases | Smokers in Controls | Non-Smokers in Cases | Non-Smokers in Controls | Mean Age of Cases | Mean Age of Controls | Number of HPV positives in Cases | Number of HPV positives in Controls | Number of HPV negative in Cases | Number of HPV negative in Controls | Geographical Location of the Study | Reference URLs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jain V et al.2017 | Study 20 | 100 | 100 | 0 | 0 | 0 | 0 | 50.9±8.2 | 44.05±10.4 | 0 | 0 | 0 | 0 | Raipur | https://www.ncbi.nlm.nih.gov/pubmed/28433806 |
| Satinder K et al.2017 | Study 25 | 150 | 150 | 0 | 0 | 0 | 0 | 48.5±9.4 | 46.1±11.2 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/28361858 |
| Bajpai D et al.2016 | Study 28 | 65 | 68 | 13 | 5 | 52 | 63 | 43.9±0.0 | 43.2±10.3 | 61 | 12 | 4 | 56 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/25812040 |
| Konathala G et al.2016 | Study 29 | 125 | 150 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Visakhapatnam | https://www.ncbi.nlm.nih.gov/pubmed/27942558 |
| Sharma A et al. 2015 | Study 3 | 135 | 457 | 22 | 39 | 113 | 418 | 42.1±11.7 | 41.1±8.9 | 89 | 91 | 46 | 366 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/26434855 |
| Abbas M et al. 2014 | Study 1 | 200 | 208 | 13 | 9 | 74 | 119 | 48.54±9.529 | 48.09±8.347 | 0 | 0 | 0 | 0 | Lucknow | https://www.ncbi.nlm.nih.gov/pubmed/24657182 |
| Singhal P et al.2014 | Study 5 | 256 | 250 | 0 | 0 | 0 | 0 | 48.6±11 | 46.07±6.6 | 229 | 12 | 27 | 238 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/25412954 |
| Singhal P et al.2013 | Study 12 | 182 | 182 | 0 | 0 | 0 | 0 | 49±0.0 | 49±9.64 | 166 | 8 | 16 | 174 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/23210739 |
| Shekari M et al.2012 | Study 7 | 200 | 200 | 90 | 62 | 110 | 138 | 48.55±9.43 | 48.81±9.64 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/22157213 |
| Prasad et al.2011 | Study 16 | 62 | 241 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | Andhra Pradesh | https://www.ncbi.nlm.nih.gov/pubmed/21934341 |
| Kohar I et al. 2010 | Study 18 | 203 | 231 | 0 | 0 | 0 | 0 | 49.4±12.4 | 48.2±10.2 | 173 | 2 | 30 | 229 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/19793004 |
| Singh H et al.2009 | Study 6 | 150 | 162 | 0 | 0 | 0 | 0 | 47.2±8.8 | 48.3±8.3 | 0 | 0 | 0 | 0 | Lucknow | https://www.ncbi.nlm.nih.gov/pubmed/19823053 |
| Gangwar R et al.2009 | Study 8 | 200 | 230 | 62 | 32 | 138 | 198 | 44.8±9.3 | 46.7±9.9 | 0 | 0 | 0 | 0 | Lucknow | https://www.ncbi.nlm.nih.gov/pubmed/19681846 |
| Thakur N et al.2009 | Study 26 | 200 | 200 | 0 | 0 | 0 | 0 | 49±11.3 | 49±11.3 | 0 | 0 | 0 | 0 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/19489683 |
| Kordi TMK et al.2008 | Study 9 | 200 | 200 | 90 | 62 | 110 | 138 | 48.55±9.43 | 48.81±9.9 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/18806746 |
| Singh H et al.2008 | Study 10 | 150 | 162 | 0 | 0 | 0 | 0 | 47.2±8.8 | 48.3±9.64 | 0 | 0 | 0 | 0 | Lucknow | https://www.ncbi.nlm.nih.gov/pubmed/18333945 |
| Sobti RC et al.2008 | Study 11 | 150 | 200 | 65 | 57 | 83 | 74 | 48.55±9.43 | 48.81±8.3 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/18154955 |
| Nandan NK et al.2008 | Study 17 | 142 | 77 | 0 | 0 | 0 | 0 | 39±5 | 39±5 | 0 | 0 | 0 | 0 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/19356065 |
| Shekari M et al.2008 | Study 19 | 200 | 200 | 2 | 6 | 110 | 138 | 48.55±9.43 | 48.81±9.64 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/18351371 |
| Satinder K et al.2008 | Study 27 | 150 | 150 | 67 | 62 | 83 | 88 | 48.5±9.4 | 46.1±11.2 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/18548202 |
| Joseph T et al.2006 | Study 2 | 222 | 90 | 0 | 0 | 0 | 0 | 46±10.3 | 47±9.2 | 111 | 32 | 36 | 280 | Thiruvananthapuram | https://www.ncbi.nlm.nih.gov/pubmed/16360200 |
| Sobti RC et al.2006 | Study 4 | 103 | 103 | 45 | 13 | 58 | 90 | 48.6±9.9 | 48±11.3 | 0 | 0 | 0 | 0 | Chandigarh | https://www.ncbi.nlm.nih.gov/pubmed/16631467 |
| Bhattacharya P et al.2005 | Study 15 | 120 | 205 | 0 | 0 | 0 | 0 | 0 | 0 | 82 | 84 | 38 | 121 | Kolkata | https://www.ncbi.nlm.nih.gov/pubmed/16054204 |
| Mitra S et al. 2004 | Study 21 | 61 | 94 | 0 | 0 | 0 | 0 | 46.89±10.29 | 47.44±12.53 | 52 | 17 | 9 | 77 | Kolkata | https://www.ncbi.nlm.nih.gov/pubmed/15623478 |
| Katiyar S et al.2003 | Study 23 | 163 | 74 | 0 | 0 | 0 | 0 | 0 | 0 | 128 | 0 | 35 | 74 | New Delhi | https://www.ncbi.nlm.nih.gov/pubmed/14577584 |
| Pillai MR et al.2002 | Study 13 | 311 | 110 | 0 | 0 | 0 | 0 | 0 | 0 | 201 | 14 | 110 | 96 | Thiruvananthapuram | https://www.ncbi.nlm.nih.gov/pubmed/12458344 |
| Bhattacharya P et al.2002 | Study 14 | 55 | 201 | 0 | 0 | 0 | 0 | 0 | 0 | 46 | 84 | 9 | 117 | Kolkata | https://www.ncbi.nlm.nih.gov/pubmed/12406566 |
| Nagpal JK et al. 2002 | Study 22 | 111 | 29 | 0 | 0 | 0 | 0 | 0 | 0 | 77 | 11 | 34 | 18 | Cuttack | https://www.ncbi.nlm.nih.gov/pubmed/12534455 |
| Saranath D et al. 2002 | Study 24 | 337 | 164 | 0 | 0 | 0 | 0 | 0 | 0 | 258 | 37 | 79 | 127 | Mumbai | https://www.ncbi.nlm.nih.gov/pubmed/12144822 |