Table 4. H. pylori and CagA status (n = 257).
| Frequency, N (%) | Fisher’s exact test | ||||||
|---|---|---|---|---|---|---|---|
| Negrito | Proto Malay | Senoi | Total | Negrito vs. Proto Malay | Negrito vs. Senoi | Proto Malay vs. Senoi | |
| Anti-WC | |||||||
| Sero-positive | 54 (48.6) | 6 (50) | 26 (19.4) | 86 (33.5) | |||
| Sero-negative | 54 (48.6) | 5 (41.7) | 96 (71.6) | 155 (60.3) | 0.423 | <0.001** | 0.041* |
| Equivocal | 3 (2.7) | 1 (8.3) | 12 (9) | 16 (6.2) | |||
| Anti-CagA | |||||||
| Sero-positive | 54 (48.6) | 1 (8.3) | 17 (12.7) | 72 (28) | 0.012* | <0.001** | 1.000 |
| Sero-negative | 57 (51.4) | 11 (91.7) | 117 (87.3) | 185 (72) | |||
| Anti-WC + Anti-CagA | |||||||
| Sero-positive | 35 (31.5) | 0 | 8 (6) | 43 (16.7) | 0.019* | <0.001** | 1.000 |
| Sero-negative | 36 (32.4) | 5 (41.7) | 88 (65.7) | 129 (50.2) | |||
| Overall H. pylori status | |||||||
| Sero-positive | 73 (65.8) | 7 (58.3) | 35 (26.1) | 115 (44.7) | |||
| Sero-negative | 36 (32.4) | 5 (41.7) | 88 (65.7) | 129 (50.2) | 0.624 | <0.001** | 0.081 |
| Equivocal¥ | 2 (1.8) | 0 | 11 (8.2) | 13 (5.1) | |||
| Total | 111 | 12 | 134 | 257 | |||
| CagA-positive H. pylori | 54 (73.8) | 1 (14.3) | 17 (48.6) | 72 (62.6) | 0.016* | 0.020* | 0.312 |
*significant at level p<0.05
**significant at level p<0.01
¥The respondent with equivocal status of H. pylori was taken out due to small group size.