Table 3.

Predictors of positive HPV6, 11, and 18 serology among controls (n = 548)

Variable	HPV6				HPV11				HPV18
	Positive (%)	Negative (%)	Crude OR (95% CI)	Adjusted OR (95% CI)a	Positive (%)	Negative (%)	Crude OR (95% CI)	Adjusted OR (95% CI)a	Positive (%)	Negative (%)	Crude OR (95% CI)	Adjusted OR (95% CI)a
Age
<60	35 (46%)	210 (44%)	1.0	1.0	18 (58%)	227 (44%)	1.0	1.0	19 (44%)	226 (45%)	1.0	1.0
>60	41 (54%)	262 (56%)	0.9 (0.6–1.5)	0.8 (0.5–1.3)	13 (42%)	290 (56%)	0.6 (0.3–1.2)	0.5 (0.2–1.0)	24 (56%)	279 (55%)	1.0 (0.5–1.9)	1.0 (0.5–1.9)
Gender
Male	54 (71%)	347 (74%)	1.0	1.0	20 (65%)	381 (74%)	1.0	1.0	28 (65%)	373 (74%)	1.0	1.0
Female	22 (29%)	125 (26%)	1.1 (0.7–1.9)	1.3 (0.7–2.4)	11 (35%)	136 (26%)	1.5 (0.7–3.3)	1.7 (0.7–4.0)	15 (35%)	132 (26%)	1.5 (0.8–2.9)	1.7 (0.8–3.5)
Race
White	63 (83%)	437 (93%)	1.0	1.0	24 (77%)	476 (92%)	1.0	1.0	36 (84%)	464 (92%)	1.0	1.0
Non-white	13 (17%)	35 (7%)	2.6 (1.3–5.1)	2.5 (1.2–5.0)	7 (23%)	41 (8%)	3.4 (1.4–8.3)	3.2 (1.2–8.3)	7 (16%)	41 (8%)	2.2 (0.9–5.3)	2.1 (0.9–5.1)
Drinking
No/low	34 (45%)	252 (53%)	1.0	1.0	13 (42%)	273 (53%)	1.0	1.0	19 (44%)	267 (53%)	1.0	1.0
High	42 (55%)	220 (47%)	1.4 (0.9–2.3)	1.3 (0.8–2.2)	18 (58%)	244 (47%)	1.5 (0.7–3.2)	1.6 (0.7–3.7)	24 (56%)	238 (47%)	1.4 (0.8–2.7)	1.6 (0.8–3.1)
Smoking
No/low	40 (53%)	325 (69%)	1.0	1.0	17 (55%)	348 (67%)	1.0	1.0	27 (63%)	338 (67%)	1.0	1.0
High	36 (47%)	147 (31%)	2.0 (1.2–3.3)	2.1 (1.2–3.5)	14 (45%)	169 (33%)	1.7 (0.8–3.5)	1.9 (0.9–4.4)	16 (37%)	167 (33%)	1.2 (0.6–2.3)	1.2 (0.6–2.3)
HPV16
Negative	61 (80%)	429 (91%)	1.0	1.0	22 (71%)	468 (91%)	1.0	1.0	34 (79%)	456 (90%)	1.0	1.0
Positive	15 (20%)	43 (9%)	2.5 (1.3–4.7)	2.2 (1.1–4.3)	9 (29%)	49 (9%)	3.9 (1.7–9.0)	3.4 (1.4–8.0)	9 (21%)	49 (10%)	2.5 (1.1–5.4)	2.1 (1.0–4.8)

Bold typeface indicates P < 0.05.

^aThe adjusted models include age, gender, race, drinking, smoking, and HPV16.