Table 4.

Logistic regression analysis of independent factors for intention to receive the HPV vaccine among unvaccinated participants (N = 511).

Variables	Group N (%)		OR (95% CI)	p-value
	Intention to receive vaccines (N = 158)	No intention to receive vaccines (N = 353)
Sex
Female	130 (82.3%)	261 (73.9%)	1.6 (1.0–2.7)	0.040
Male	28 (17.7%)	92 (26.1%)	0.6 (0.4–1.0)	0.040
Religion
Buddhism	123 (77.8%)	281 (79.6%)	0.9 (0.6–1.5)	0.652
Muslim	34 (21.5%)	64 (18.1%)	1.2 (0.8–2.0)	0.369
Others	1 (0.6%)	8 (2.3%)	0.3 (0.0–2.1)	0.195
Major
Health-related	77 (48.7%)	155 (43.9%)	1.2 (0.8–1.8)	0.311
Non-health related	81 (51.3%)	198 (56.1%)	0.8 (0.6–1.2)	0.311
Year of study
1st year	49 (31.0%)	166 (47.0%)	0.5 (0.3–0.8)	0.001
2nd year	53 (33.5%)	97 (27.5%)	1.3 (0.9–2.0)	0.164
3rd year	28 (17.7%)	44 (12.5%)	1.5 (0.9–2.6)	0.114
4th year	25 (15.8%)	41 (11.6%)	1.4 (0.8–2.5)	0.190
5th year or more	3 (1.9%)	5 (1.4%)	1.4 (0.2–7.0)	0.685
Family's monthly income (USD)
<500	25 (15.8%)	73 (20.7%)	0.7 (0.4–1.2)	0.197
500–1000	69 (43.7%)	162 (45.9%)	0.9 (0.6–1.4)	0.641
1001–1500	32 (20.3%)	71 (20.1%)	1.0 (0.6–1.6)	0.971
1501–3000	21 (13.3%)	33 (9.3%)	1.5 (0.8–2.8)	0.180
>3000	8 (5.1%)	11 (3.1%)	1.7 (0.6–4.6)	0.282
Ever had sex
No	137 (86.7%)	301 (85.3%)	1.1 (0.6–2.1)	0.667
Yes	14 (8.9%)	41 (11.6%)	0.7 (0.4–1.4)	0.353
Not answered	7 (4.4%)	11 (3.1%)	1.4 (0.5–4.2)	0.456
Have heard of HPV infection
No/Not sure	79 (50.0%)	213 (60.3%)	0.7 (0.4–0.9)	0.029
Yes	79 (50.0%)	140 (39.7%)	1.5 (1.0–2.3)	0.029
Have heard of HPV vaccine
No/Not sure	103 (65.2%)	284 (80.5%)	0.5 (0.3–0.7)	<0.001
Yes	55 (34.8%)	69 (19.5%)	2.2 (1.4–3.4)	<0.001
HPV and its vaccine knowledge score (Total 18 score)
<7	53 (33.5%)	161 (45.6%)	0.6 (0.4–0.9)	0.011
≥7	105 (66.5%)	192 (54.4%)	1.7 (1.1–2.5)	0.011

OR = unadjusted odds ratio; CI = confidence interval.