Table 2.

Baseline demographic characteristics of the study population on January 1, 2016, by HPV vaccination status

	Eligible to Initiate	Eligible to Complete
	N=34,637	N=19,936
	N, %	N, %
ADI quartile
First	8172, 23.6%	5334, 26.8%
Second	15131, 43.7%	8540, 42.8%
Third	8648, 25.0%	4616, 23.2%
Fourth	2686, 7.8%	1446, 7.3%
Age
11–12	11670, 33.7%	13707, 31.3%
13–15	10997, 31.8%	14837, 33.9%
16–18	11970, 34.6%	15280, 34.9%
Sex
Boys	19196, 55.4%	10248, 51.4%
Girls	15441, 44.6%	9688, 48.6%
Race
White	28585, 82.5%	16640, 83.5%
Black	1744, 5.0%	979, 4.9%
Asian	867, 2.5%	583, 2.9%
Other/Unknown	3441, 9.9%	1734, 8.7%
Ethnicity
Hispanic	2514, 7.3%	1636, 8.2%
Not Hispanic	32123, 92.7%	18300, 91.8%
Rurality
Rural	11051, 31.9%	5631, 28.2%
Urban	23586, 68.1%	14305, 71.8%

ADI=Area Deprivation Index