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. 2015 May 1;10(5):e0124499. doi: 10.1371/journal.pone.0124499

Table 4. Coverage by commercial a , b and investigational c , d HPV vaccines of ≥1 HPV infecting type(s), by gender identity of MSM subjects in Chiang Mai, Thailand, 2012–2013.

No. of participant / Total cases (%) Increased percentage coverage above 2-valent (95% CI) Ratio to 2-valent (95% CI) Statistic, p-value
Gay Men, N(%)
 2-valent 33 / 85 (38.8) Ref.
 4-valent 45 / 85 (52.9) +14.1 (5.5–22.7) 1.4 (1.1–1.6) χ2 (1) = 12.0, p = 0.0005
 7-valent 54 / 85 (63.5) +24.7 (14.4–35.1) 1.6 (1.3–2.0) χ2 (1) = 21.0, p = 0.000
 9-valent 61 / 85 (71.8) +32.9 (21.8–44.1) 1.9 (1.5–2.3) χ2 (1) = 28.0, p = 0.000
Bisexual Men, N(%)
 2-valent 7 / 29 (24.1) Ref.
 4-valent 10 / 29 (34.5) +10.3 (-4.2–24.9) 1.4 (1.0–2.1) χ2 (1) = 3.0, p = 0.083, NS
 7-valent 8 / 29 (27.6) +3.5 (-6.6–13.5) 1.1 (0.9–1.5) χ2 (1) = 1.0, p = 0.317, NS
 9-valent 11 / 29 (37.9) +13.8 (-2.2–29.8) 1.6 (1.0–2.5) χ2 (1) = 4.0, p = 0.046
Transgender Women, N(%)
 2-valent 30 / 83 (36.1) Ref.
 4-valent 40 / 83 (48.2) +12.1 (3.8–20.3) 1.3 (1.1–1.6) χ2 (1) = 10.0, p = 0.002
 7-valent 49 / 83 (59.0) +22.9 (12.7–33.1) 1.6 (1.3–2.0) χ2 (1) = 19.0, p = 0.000
 9-valent 54 / 83 (65.1) +28.9 (18.0–39.9) 1.8 (1.4–2.3) χ2 (1) = 24.0, p = 0.000
All participant, N(%)
 2-valent 70 / 197 (35.5) Ref.
 4-valent 95 / 197 (48.2) +12.7 (7.5–17.8) 1.4 (1.2–1.5) χ2 (1) = 25.0, p = 0.000
 7-valent 111 / 197 (56.4) +20.8 (14.6–27.0) 1.6 (1.4–1.8) χ2 (1) = 41.0, p = 0.000
 9-valent 126 / 197 (64.0) +28.4 (21.6–35.2) 1.8 (1.5–2.1) χ2 (1) = 56.0, p = 0.000

a 2–valent coverage: number infected with ≥1 HPV type(s) 16 and/or 18

b 4–valent coverage: number infected with ≥1 HPV type(s) 16, 18, 6, and/or 11

c 7–valent coverage: number infected with ≥1 HPV type(s) 16, 18, 31, 33, 45, 52, and/or 58

d 9–valent coverage: number infected with ≥1 HPV type(s) 16, 18, 31, 33, 45, 52, 58, 6, and/or 58).