Age-Related Changes in the Fraction of Cervical Intraepithelial Neoplasia Grade 3 Related to HPV Genotypes Included in the Nonavalent Vaccine

Table 1

Patient characteristics.

Variables	Sample size (204); n (%)
Age (years) (median and interquartile range)	37.0 (31.0–44.0)
Ethnicity
Italian	162 (79.4)
Chinese	11 (5.4)
East Europe	26 (12.7)
Northern Europe	1 (0.5)
African	4 (2.0)
Sample collection year
2011 (4 months)	22 (10.8)
2012 (12 months)	64 (31.4)
2013 (12 months)	67 (32.8)
2014 (11 months)	51 (25.0)
Single HPV infections	181 (88.7)
Multiple HPV infections	23 (11.3)
Potential HPV vaccine protection	187 (91.7)
Non-high-risk HPV genotypes	8 (3.9)

HPV: human papillomavirus.