Preference of specimen collection methods for human papillomavirus detection for cervical cancer screening: a cross-sectional study of high-risk women in Mombasa, Kenya

Table 3 Multinomial regression analysis exploring predictors of women’s preference for the Viba or the Evalyn cytobrush

Variable	Prefers Viba cytobrush		Prefers Evalyn cytobrush
Variable	Relative risk ratio (95% CI)	p-value	Relative risk ratio (95% CI)	p-value
Age (years)	0.92 (0.88–0.97)	0.001	0.94 (0.91–0.98)	0.004
Age at first sex (years)	1.07 (0.89–1.28)	0.47	1.05 (0.90–1.23)	0.55
Parity
Nulliparous	Reference		Reference
Ever pregnant	0.68 (0.52–0.90)	0.008	0.82 (0.65–1.02)	0.07
Education
No high school education	Reference		Reference
At least high school-level	1.22 (0.54–2.78)	0.63	1.42 (0.70–2.88)	0.34
Marital status
Never married	Reference		Reference
Ever married	0.81 (0.35–1.85)	0.62	0.95 (0.46–1.95)	0.88
HIV status
HIV-negative	Reference		Reference
HIV-positive	1.16 (0.51–2.63)	0.72	0.62 (0.31–1.26)	0.19
Religion
Christian	Reference		Reference
Muslim	0.35 (0.07–1.93)	0.23	0.92 (0.30–2.83)	0.89
Other^a	2.66 (0.27–26.62)	0.41	0.42 (0.03–6.87)	0.54
Evalyn brush more comfortable to insert^b	0.64 (0.46–0.89)	0.009	1.38 (0.92–2.06)	0.12
Viba brush more comfortable to insert ^b	1.48 (1.01–2.16)	0.04	0.69 (0.55–0.87)	0.002
Concerned about hurting themselves with Evalyn brush ^b	1.25 (0.98–1.58)	0.07	0.89 (0.72–1.09)	0.25
Concerned about hurting themselves with Viba brush ^b	0.93 (0.74–1.18)	0.56	1.38 (1.12–1.69)	0.002

^aTraditional African religions and no religious affiliation
^bFor this analysis, the rating scale for these questions was reverse coded (5 strongly agree, 4 agree somewhat, 3 neutral, 2 disagree somewhat, 1 strongly disagree) so that increasing ratings indicated agreement with each item and higher relative risk ratios indicated a higher probability of preferring the brush specified

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