Table 4. HPV Vaccine Choice by Medical History.

	Prefer HPV2†		Prefer HPV4‡
	N	%	N	%	p-value
Age
<21 years	114	56.2	89	43.8	0.013
≥21 years	205	62.5	123	37.5	<0.001
Gravidity
n = 0	282	61.0	180	39.0	<0.001
n≥0	21	48.8	22	51.2	NS
Contraceptive Use
No	171	61.1	109	38.9	<0.001
Yes	144	58.1	104	41.9	NS
Condom Use
No	115	59.6	78	40.4	<0.001
Yes	190	60.7	123	39.3	<0.001
History of HPV Vaccine
No	183	65.8	95	34.2	<0.001
Yes	145	54.3	122	45.7	<0.05
History of Genital Warts
No	309	59.9	207	40.1	<0.001
Yes	8	61.5	5	38.5	<0.001
History of Other STIs
No	287	65.7	186	42.6	<0.001
Yes	30	53.6	26	46.4	NS
History of Pap test*
No	41	85.4	7	14.6	<0.001
Yes	155	57.4	115	42.6	<0.001
History of Abnormal Cytology*
No	158	65.6	83	34.4	<0.001
Yes	40	50.6	39	49.4	NS
History of HPV Infection*
No	180	63.6	103	36.4	<0.001
Yes	18	48.6	19	51.4	NS
History of Colposcopy*
No	174	63.7	99	36.3	<0.001
Yes	24	51.1	23	48.9	NS

*Among women ≥21 years old.

^†HPV2 means bivalent vaccine, Cervarix®.

^‡HPV4 means quadrivalent vaccine, Gardasil® or Silgard®.

Chi-square or Fisher’s exact testing were used to compare proportions.

Bold font indicates statistical significance.