Table 3. Willingness to undergo screening per type of sample collection.

	All	N d	Percent (95% CI)	OR (95% CI)	p-value
Screening with doctor-collected samples
All	1,126 a	553	49.1 (46.2−52.1)	―	<0.001 e
Age
30−39 years	371 b	216	58.2 (53.0−63.3)	1.00	<0.001 f
40−49 years	429 b	220	51.3 (46.4−56.1)	0.76 (0.57−1.00)	<0.001 g
50−59 years	337 b	124	36.8 (31.6−42.2)	0.42 (0.31−0.57)
Duration without screening
3−5 years	199 b	123	61.8 (54.7−68.6)	1.00	<0.001 f
6 years or more	261 b	136	52.1 (45.9−58.3)	0.67 (0.46−0.98)	<0.001 g
No screening records	677 b	301	44.5 (40.7−48.3)	0.49 (0.36−0.68)
Screening with self-collected samples
All	1,126 a	1,005	89.3 (87.3−91.0)	―
Age
30−39 years	377 c	343	91.0 (87.6−93.7)	1.00	0.356 f
40−49 years	441 c	390	88.4 (85.1−91.3)	0.76 (0.48−1.20)	0.182 g
50−59 years	348 c	306	87.9 (84.0−91.2)	0.72 (0.45−1.16)
Duration without screening
3−5 years	201 c	180	89.6 (84.5−93.4)	1.00	0.771 f
6 years or more	273 c	246	90.1 (85.9−93.4)	1.06 (0.58−1.94)	0.702 g
No screening records	692 c	613	88.6 (86.0−90.9)	0.91 (0.54−1.51)

CI: confidence interval; OR: odds ratio

^a Number of participants who answered both questions related to willingness to undergo screening with doctor-collected samples and self-collected samples. Missing values were 66.

^b Number of participants who answered a question related to willingness to undergo screening with doctor-collected samples. Missing values were 55.

^c Number of participants who answered a question related to willingness to undergo screening with self-collected samples. Missing values were 26.

^d Number of participants who answered, “I will receive.”

^e Comparison of willingness between two screenings using McNemer’s test.

^f Comparison of willingness with age or duration without screening using chi-squared test.

^g Comparison of willingness with age or duration without screening using linear trend test.