Characteristics | Compared to NP | |||||
---|---|---|---|---|---|---|
SIP | SNSCC | |||||
n | OR (95%CI) | P value | n | OR (95%CI) | P value | |
Number of cases | 64 | Â | Â | 82 | Â | Â |
Age (years) | ||||||
  < 50 | 17 (26.6%) | 3.86 (1.82–8.19) | 0.000 | 16 (19.5%) | 6.43 (3.11–13.33) | 0.000 |
  ≥ 50 | 47 (73.4%) | 66 (80.5%) | ||||
Sex (%) | ||||||
 Male | 45 (70.3%) | 0.57 (0.26–1.25) | 0.158 | 55 (67.1%) | 1.03 (0.49–2.15) | 0.933 |
 Female | 19 (29.7%) | 27 (32.9%) | ||||
EBV infection | ||||||
 Yes | 41 (64.1%) | 3.52 (1.70–7.28) | 0.001 | 31 (37.8%) | 1.83 (0.89–3.78) | 0.100 |
 No | 23 (35.9%) | 51 (62.2%) |