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Table 1 Model input parameters

From: The impact and cost-effectiveness of 9-valent human papillomavirus vaccine in adolescent females in Hong Kong

Input parameter

Data source

Demographic variables

 Total population size (males and females), 2016

7,336,600

Hong Kong Census [22]

Sexual behavior variables

 Percentage of the population in the following sexual activity risk groups

 Sexual activity category

Males

Females

Youth Sexuality Study 2011 [27]

  Low (0–1 mean sexual partners per year)

80

94

  Medium (2–4 mean sexual partners per year)

15

5

  High (≥ 5 mean sexual partners per year)

5

1

 Mean number of sexual partners per year by the following sexual activity risk groups

 Sexual activity category

Males

Females

Youth Sexuality Study 2011 [27]

  Low (0–1 mean sexual partners per year)

0.75

0.92

  Medium (2–4 mean sexual partners per year)

2.52

2.43

  Medium (2–4 mean sexual partners per year)

6.1

7.14

Screening variables

Hong Kong Department of Health Cervical Screening Programme 2015 [45]

Disease variables

 Cervical cancer

Hong Kong Cancer Registry 2015 [25], Chan 2009 [46], Chan 2011 [7], Lin 2010 [4]

 Vaginal/vulvar cancer

Hong Kong Cancer Registry 2015 [25], De Martel 2017 [8]

 Anal cancer

Hong Kong Hospital Authority data (Data on file)