From: Hookah smoking and cancer: carcinoembryonic antigen (CEA) levels in exclusive/ever hookah smokers
CEA mean levels (ng/ml) | Smokers | Non-smokers |
---|---|---|
Fukuda et al12 | 3.11 ± 1.8 (n = 467) | 2.14 ± 1.8 (n = 874) |
Alexander et al11 | 2.7 (n = 154) | 1.9 (n = 122) |
Naghilbahossaini et al16 | 1.84 ± 0.97 (n = 44). Opium smokers: 3.09 ± 3.00 (n = 128) | 1.77 ± 0.86 (n = 47) |