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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Contraception. 2010 Dec 1;82(6):549–555. doi: 10.1016/j.contraception.2010.05.007

Table 2.

Multinomial multivariable logistic regression examining associations with type of contraception use (versus condoms only) at last sexual intercourse, males a

Weighted No method/unsure
n = 1,609
OR (95% CI)		 Withdrawal only
n = 964
OR (95% CI)		 Birth control pills only
n = 900
OR (95% CI)		 DMPA only b
n = 121
OR (95% CI)		 Dual methodc
n = 611
OR (95% CI)
Risk Scale
  0 1.0 1.0 1.0 1.0 1.0
  1 1.1 (0.8–1.6) 1.2 (0.7–2.2) 0.9 (0.5–1.8) 3.5 (0.5–22.9) 1.3 (0.7–2.4)
  2 0.9 (0.7–1.3) 0.8 (0.5–1.5) 0.9 (0.5–1.6) 2.0 (0.3–12.5) 1.0 (0.6–1.7)
  3 1.1 (0.8–1.5) 1.2 (0.7–2.0) 1.2 (0.7–2.0) 4.8 (0.8–27.6) 1.2 (0.7–2.0)
  4 2.4 (1.7–3.4) 2.6 (1.5–4.3) 1.4 (0.8–2.4) 7.4 (1.2–46.0) 1.6 (0.9–2.8)
No. of sex partners
  1 1.0 1.0 1.0 1.0 1.0
  2–5 0.7 (0.6–0.8) 0.8 (0.6–1.0e) 0.8 (0.6–1.0c) 0.9 (0.5–1.5) 1.1 (0.9–1.4)
  6+ 0.9 (0.6–1.1) 0.9 (0.7–1.3) 1.0 (0.7–1.4) 1.0 (0.4–2.2) 1.1 (0.7–1.7)
Age of sexual debut
  ≥ 17 1.0 1.0 1.0 1.0 1.0
  15–16 1.1 (0.8–1.4) 1.1 (0.8–1.5) 1.4 (1.0–2.0e) 1.0 (0.4–2.3) 0.9 (0.6–1.2)
  13–14 1.2 (0.9–1.7) 1.0 (0.7–1.6) 1.9 (1.2–2.9) 0.9 (0.3–2.4) 0.7 (0.4–1.1)
  ≤ 12 2.2 (1.5–3.4) 1.2 (0.8–2.0) 1.3 (0.8–2.3) 1.1 (0.4–3.4) 0.6 (0.4–1.0d)
Race
  Caucasian 1.0 1.0 1.0 1.0 1.0
  African American 1.0 (0.8–1.2) 0.7 (0.6–1.0d) 0.2 (0.2–0.3) 0.5 (0.3–1.0e) 0.4 (0.3–0.6)
  Hispanic 1.5 (1.3–1.9) 0.8 (0.6–1.1) 0.5 (0.4–0.7) 0.7 (0.3–1.5) 0.5 (0.3–0.8)

NOTE: ORs are adjusted for age at interview, survey year, and all other variables in the table. Survey year was not significant.

a

Condoms only (reference group): Weighted n = 8,289. Males who responded with “some other (contraception) method” used at last sexual intercourse (total weighted n = 265) were removed from the analyses.

b

Abbreviations: DMPA = medroxyprogesterone acetate (i.e., injectable birth control), CI, confidence interval; OR, odds ratio.

c

Dual method = condoms plus birth control pills or DMPA.

d

With greater precision, the interval does not include 1.00 and is therefore significant.

e

With greater precision, the interval includes 1.00 and is therefore non-significant.