. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: Obstet Gynecol. 2011 Jan;117(1):48–54. doi: 10.1097/AOG.0b013e318202b4c9

Table 4.

Respondent’s estimates of contraceptive effectiveness, weighted percents

	Unweighted N	Estimation of Effectiveness
	Unweighted N	Correct	Underestimate	Overestimate

IUC	1611	39%	61%	n/a

Implant	1626	45%	55%	n/a

OCP	1635	16%	13%	71%

Patch	1632	22%	8%	70%

Vaginal Ring	1617	20%	9%	71%

DMPA	1626	39%	18%	44%

Condoms	1631	37%	n/a	64%

Sterilization	1626	74%	26%	n/a

IUC – intrauterine contraception; Implant – subdermal contraceptive implant; OCP – oral contraceptive pills; Patch – contraceptive patch; Ring – vaginal contraceptive ring; DMPA – depomedroxyprogesterone acetate contraceptive injection.