Table 1.

Genotype and allele frequencies of the p53 codon 72 polymorphism in 132 patients with head and neck squamous cell carcinoma and 123 healthy controls

	Patients	Controls
	n (%)	n (%)
Alleles
Arginine	161 (61.0)	151 (61.4)
Proline	103 (39.0)	95 (38.6)
Genotypes
Arginine/Arginine	49 (37.1)	44 (35.8)
Arginine/Proline	63 (47.7)	63 (51.2)
Proline/Proline	20 (15.2)	16 (13.0)

No statistically significant difference was found between patients and controls in any of the comparisons as calculated with the chi-squared test in 2 × 3 or 2 × 2 tables.