Table 7.

Pooled prevalence estimates of HPV types by covariate ^a

HPV type	Covariates	Coefficient	Standard error	95% confidence interval		p-value
				Low	High
HPV-6	Western vs. Eastern	−0.059	0.198	−0.609	0.492	0.782
	GP5+/GP6 + b	0.124	0.171	−0.350	0.599	0.507
	Laryngealc	0.040	0.136	−0.393	0.473	0.788
	Oralc	0.459	0.210	−0.208	1.126	0.116
HPV-11	Western vs. Eastern	−0.005	0.090	−0.393	0.383	0.960
	Fixed biopsy vs. others	−0.018	0.142	−1.825	1.788	0.919
	GP5+/GP6 + b	0.017	0.118	−1.478	1.512	0.908
	MY09/MY11b	0.032	0.169	−2.112	2.176	0.882
	Laryngealc	−0.014	0.160	−2.009	1.981	0.944
	Oralc	0.006	0.129	−1.634	1.647	0.968
HPV-16	Western vs. Eastern	0.101	0.100	−0.105	0.308	0.320
	Fixed biopsy vs. others	0.356	0.282	−0.228	0.939	0.220
	GP5+/GP6 + b	−0.095	0.108	−0.321	0.132	0.393
	MY09/MY11b	−0.066	0.161	−0.403	0.271	0.687
	Laryngealc	−0.171	0.155	−0.493	0.152	0.283
	Oralc	−0.030	0.131	−0.303	0.242	0.820
	Oropharyngealc	0.183	0.133	−0.094	0.460	0.184
	Tonsillarc	0.194	0.126	−0.069	0.457	0.139
HPV-18	Western vs. Eastern	0.249	0.302	−0.713	1.210	0.471
	Fixed biopsy vs. others	0.191	0.407	−1.103	1.485	0.671
	GP5+/GP6 + b	0.207	0.477	−1.847	2.261	0.707
	MY09/MY11b	−0.039	0.592	−2.587	2.509	0.954
	Laryngeal^	−0.146	0.398	−1.414	1.121	0.737
HPV-33	Western vs. Eastern	−0.029	0.032	−0.099	0.040	0.375
	GP5+/GP6 + b	−0.039	0.042	−0.132	0.056	0.390
	MY09/MY11b	0.036	0.157	−0.314	0.386	0.825
	Laryngealc	0.017	0.094	−0.197	0.230	0.863
	Oralc	−0.082	0.084	−0.272	0.108	0.354
	Oropharyngealc	−0.094	0.070	−0.251	0.064	0.212
	Tonsillarc	−0.108	0.068	−0.262	0.045	0.144

^aSignificance level: p < 0.05.

^bCompared with ‘other’ types of primers (not including GP5+/GP6+ or MY09/MY11 combinations).

^cCompared with ‘other’ cancers (base of tongue, hypopharyngeal, paranasal sinus, pharyngeal, tongue, unclassifiable, and Waldeyer’s ring).