Table 3.
Case-Control Studies on NPC Association with Smoking Habit
| Study | Cases group |
Control group |
OR (95%-CI) | ||
|---|---|---|---|---|---|
| Cases | Total | Control | Total | ||
| Xie et al., (2015) | 101 | 352 | 69 | 410 | 1.99 (1.41-2.81) |
| Lourenbam et al., (2015). | 56 | 105 | 54 | 115 | 1.29 (0.76-2.19) |
| He et al., (2015). | 972 | 1,845 | 893 | 2,275 | 1.72 (1.52-1.95) |
| Yong et al., (2017). | 144 | 290 | 78 | 290 | 2.68 (1.89-3.79) |
| Liu et al., (2017). | 1,390 | 2,499 | 1,368 | 2,576 | 1.11 (0.99-1.24) |
| Ghosh et al., (2014). | 43 | 64 | 27 | 100 | 5.54 (2.79-10.9) |
| Tsai et al., (2016). | 73 | 176 | 150 | 352 | 0.95 (0.66-1.38) |
| Fachiroh et al., (2012). | 404 | 681 | 407 | 1078 | 2.40 (1.98-2.93) |
| Hashim et al., (2012). | 20 | 96 | 17 | 96 | 1.22 (0.60-2.51) |
| Ji et al., (2011). | 516 | 1,044 | 312 | 1,095 | 2.45 (2.05-2.93) |
| Ekburanawat et al., (2010) | 206 | 327 | 147 | 327 | 2.08 (1.50-2.85) |
| Guo et al., (2009) | 522 | 1,049 | 396 | 785 | 0.97 (0.01-1.17) |
| Turkoz et al., (2011) | 115 | 183 | 64 | 183 | 3.14 (2.05-4.82) |
| Cao et al., (2011). | 298 | 462 | 158 | 511 | 4.06 (3.11-5.30) |
| Yang et al., (2005). | 192 | 502 | 617 | 1,942 | 1.33 (1.08-1.63) |
OR, Odds Ratio; CI, Confidence Interval