Table 3. Comparison of median bacterial DNA levels in relation to gastric cancerous lesions.
| Bacterial DNA levels | Median (IQR)1 | ||
|---|---|---|---|
| GC | FC | p-value2 | |
| Saliva | |||
| A. actinomycetemcomitans (Aa) | 2.3594
(2.1367–2.5992) |
0.9280
(0.8140–1.1065) |
<0.001 |
| P. gingivalis (Pg) | 1.3808
(1.2485–1.6380) |
2.0568
(1.8392–2.2436) |
<0.001 |
| T. denticola (Td) | 3.6482
(3.2499–4.2853) |
19.0366
(17.7566–19.5566) |
<0.001 |
| T. forsythia (Tf) | 2.0492
(1.9708–2.1451) |
7.0225
(6.7302–7.3446) |
<0.001 |
| S. sobrinus (Sb) | 3.2498
(3.0548–3.4387) |
0.5314
(0.5127–0.5517) |
<0.001 |
| S. mutans (Sm) | 5.1746
(4.8102–5.4868) |
9.4285
(9.2324–9.6245) |
<0.001 |
| Dental Plaque | |||
| A. actinomycetemcomitans (Aa) | 1.7214
(1.6410–1.8276) |
1.5863
(1.4225–1.6838) |
<0.001 |
| P. gingivalis (Pg) | 6.5364
(5.4225–7.3187) |
10.5563
(8.7321–11.1147) |
<0.001 |
| T. denticola (Td) | 1.5241
(1.4495–1.5873) |
1.8279
(1.7559–1.9116) |
<0.001 |
| T. forsythia (Tf) | 3.5175
(3.2131–3.9476) |
6.2397
(5.8068–6.8193) |
<0.001 |
Abbreviations: GC, Gastric Cancer; CF, Cancer Free; IQR, interquartile range. 1Medians of absolute bacterial counts (ng/ml) adjusted for age. 2 p-value for Mann-Whitney test.