Table 1.
Demographics of clinical cases in this study.
| Characteristics | Study Subjects (Case Number) | p Value (Chi-Square) | |||
|---|---|---|---|---|---|
| HC | OPMD I | OPMD II | OSCC | ||
| Total case number | 313 | 305 | 273 | 269 | - |
| Years of sampling 2011–2013/2014–2016 | 154/159 | 190/115 | 125/148 | 91/178 | <0.001 |
| Hospital of sampling CMMC/CGMH-KH |
210/103 | 136/169 | 169/104 | 136/133 | <0.001 |
| Gender Male/Female |
303/10 | 301/4 | 268/5 | 263/6 | 0.427 |
| Range/Median age (years) | 21–76/48 | 22–75/52 | 20–84/51 | 27–84/55 | <0.001 a |
| Individual habit | |||||
| Betel nut chewing (B) (No/Yes) Smoking (C) (No/Yes) |
121/192 34/279 |
87/218 5/300 |
32/241 24/249 |
36/233 33/236 |
<0.001 <0.001 |
| None/one/both of B and C | 25/105/183 | 1/90/214 | 6/44/223 | 13/43/213 | <0.001 |
| Saliva appearance Clear/Yellow/Red |
240/49/24 | 222/58/25 | 183/61/29 | 176/68/25 | 0.053 |
a Difference in ages between groups was tested using the Kruskal–Wallis test.