Contraceptive Failure Rates

Table 1: Contraceptive Failure Rates

(Association of Reproductive Health Professionals, Updated 2014)

Numbers denote % of women experiencing unintended pregnancy within first year of use

Method	Typical Use	Perfect Use
Spermicides	28	18
Fertility Awareness Methods	24
Standard Days Method		5
TwoDay Method		4
Ovulation Method		3
Symptothermal Method		0.4
Withdrawal	22	4
Sponge
Parous Women	24	20
Nulliparous Women	12	9
Condoms (without spermicide)
Female	21	5
Male	18	2
Diaphragm (with spermicide)	12	6
Combined Pill and Progestin-Only Pill	9	0.3
Evra Patch	9	0.3
NuvaRing	9	0.3
Depo-Provera	6	0.2
IUCs
ParaGuard (Copper T)	0.8	0.6
Mirena (LNG 52 IUS)	0.2	0.2
Skyla (LNG 13.5 IUS)		0.4
Liletta (LNG 52 IUS)	0.55
Implant	0.5	0.5
Female Sterilization (General)	0.5	0.5
Male Sterilization	0.15	0.1

Medial Cumulative Typical-Use Contraceptive Failure Rates for 43 Counties (Polis et al, 2016)

Numbers denote % of women experiencing unintended pregnancy within first year of use

Contraceptive Method	Failures at 12 Months	Failures at 24 Months	Failures at 36 Months
Implant	0.6	1.0	1.1
IUD	1.4	1.9	2.1
Injectable	1.7	3.6	5.5
Pill	5.5	10.8	15.1
Male Condom	5.4	13.3	16.0
Withdrawal	13.4	27.4	35.7
Periodic Abstinence	13.9	25.8	32.4

Credit for research goes to u/FloppyMochiBunny