Abstract
OBJECTIVE: To assess the 5-year contraceptive efficacy and safety of a levonorgestrel (LNG) 52-mg intrauterine system (IUS) from an ongoing 10-year phase 3 contraceptive trial. METHODS: Study investigators enrolled 1,751 nulliparous and parous females aged 16-45 years and desiring contraception to receive a novel LNG 52-mg IUS at 29 centers in the United States, including reproductive health clinics, private offices, and university centers. Participants had scheduled follow-up visits four times during the first year. After year 1, study visits occurred every 6 months, with phone contact at the 3-month point between visits. We assessed the primary outcome of pregnancy rate (Pearl Index) in females aged 16-35 years at enrollment through 60 months. The safety evaluation included all females for their entire duration of participation. RESULTS: The 1,751 enrollees included 1,600 females aged 16-35 years and 151 aged 36-45 years. Successful IUS placement occurred in 1,714 (97.9%) participants. At the time of the data evaluation, 495 participants finished 5 years and 176 had entered the seventh year of IUS use. Nine pregnancies occurred, six of which were ectopic. The Pearl Indices for years 1 and 5 were 0.15 (95% CI 0.02-0.55) and 0.20 (95% CI 0.01-1.13) pregnancies per 100 women-years, respectively. The cumulative life-table pregnancy rate was 0.92% (0.46-1.82%) through 5 years. Participants aged 16-35 years at enrollment were significantly more likely to report new or worsening acne, dyspareunia, pelvic pain, and dysmenorrhea; participants aged 36-45 years at enrollment were more likely to report new or worsening weight increase. Discontinuation for adverse events occurred in 322 (18.8%) participants, most commonly related to expulsion (n=65 [3.8%]). Only 39 (2.2%) IUS users discontinued as a result of bleeding symptoms. Pelvic infection was diagnosed in 14 (0.8%) participants. CONCLUSION: This LNG 52-mg IUS is highly effective and safe over 5 years of use in U.S. females. CLINICAL TRIAL REGISTRATION: Clinicaltrials.gov, NCT00995150. FUNDING SOURCE: Medicines360.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 63-70 |
| Number of pages | 8 |
| Journal | Obstetrics and Gynecology |
| Volume | 133 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2019 |
Fingerprint
ASJC Scopus subject areas
- Obstetrics and Gynecology
Cite this
Five-Year Contraceptive Efficacy and Safety of a Levonorgestrel 52-mg Intrauterine System. / Teal, Stephanie B.; Turok, David K.; Chen, Beatrice A.; Kimble, Thomas; Olariu, Andrea I.; Creinin, Mitchell D.
In: Obstetrics and Gynecology, Vol. 133, No. 1, 01.01.2019, p. 63-70.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Five-Year Contraceptive Efficacy and Safety of a Levonorgestrel 52-mg Intrauterine System
AU - Teal, Stephanie B.
AU - Turok, David K.
AU - Chen, Beatrice A.
AU - Kimble, Thomas
AU - Olariu, Andrea I.
AU - Creinin, Mitchell D
PY - 2019/1/1
Y1 - 2019/1/1
N2 - OBJECTIVE: To assess the 5-year contraceptive efficacy and safety of a levonorgestrel (LNG) 52-mg intrauterine system (IUS) from an ongoing 10-year phase 3 contraceptive trial. METHODS: Study investigators enrolled 1,751 nulliparous and parous females aged 16-45 years and desiring contraception to receive a novel LNG 52-mg IUS at 29 centers in the United States, including reproductive health clinics, private offices, and university centers. Participants had scheduled follow-up visits four times during the first year. After year 1, study visits occurred every 6 months, with phone contact at the 3-month point between visits. We assessed the primary outcome of pregnancy rate (Pearl Index) in females aged 16-35 years at enrollment through 60 months. The safety evaluation included all females for their entire duration of participation. RESULTS: The 1,751 enrollees included 1,600 females aged 16-35 years and 151 aged 36-45 years. Successful IUS placement occurred in 1,714 (97.9%) participants. At the time of the data evaluation, 495 participants finished 5 years and 176 had entered the seventh year of IUS use. Nine pregnancies occurred, six of which were ectopic. The Pearl Indices for years 1 and 5 were 0.15 (95% CI 0.02-0.55) and 0.20 (95% CI 0.01-1.13) pregnancies per 100 women-years, respectively. The cumulative life-table pregnancy rate was 0.92% (0.46-1.82%) through 5 years. Participants aged 16-35 years at enrollment were significantly more likely to report new or worsening acne, dyspareunia, pelvic pain, and dysmenorrhea; participants aged 36-45 years at enrollment were more likely to report new or worsening weight increase. Discontinuation for adverse events occurred in 322 (18.8%) participants, most commonly related to expulsion (n=65 [3.8%]). Only 39 (2.2%) IUS users discontinued as a result of bleeding symptoms. Pelvic infection was diagnosed in 14 (0.8%) participants. CONCLUSION: This LNG 52-mg IUS is highly effective and safe over 5 years of use in U.S. females. CLINICAL TRIAL REGISTRATION: Clinicaltrials.gov, NCT00995150. FUNDING SOURCE: Medicines360.
AB - OBJECTIVE: To assess the 5-year contraceptive efficacy and safety of a levonorgestrel (LNG) 52-mg intrauterine system (IUS) from an ongoing 10-year phase 3 contraceptive trial. METHODS: Study investigators enrolled 1,751 nulliparous and parous females aged 16-45 years and desiring contraception to receive a novel LNG 52-mg IUS at 29 centers in the United States, including reproductive health clinics, private offices, and university centers. Participants had scheduled follow-up visits four times during the first year. After year 1, study visits occurred every 6 months, with phone contact at the 3-month point between visits. We assessed the primary outcome of pregnancy rate (Pearl Index) in females aged 16-35 years at enrollment through 60 months. The safety evaluation included all females for their entire duration of participation. RESULTS: The 1,751 enrollees included 1,600 females aged 16-35 years and 151 aged 36-45 years. Successful IUS placement occurred in 1,714 (97.9%) participants. At the time of the data evaluation, 495 participants finished 5 years and 176 had entered the seventh year of IUS use. Nine pregnancies occurred, six of which were ectopic. The Pearl Indices for years 1 and 5 were 0.15 (95% CI 0.02-0.55) and 0.20 (95% CI 0.01-1.13) pregnancies per 100 women-years, respectively. The cumulative life-table pregnancy rate was 0.92% (0.46-1.82%) through 5 years. Participants aged 16-35 years at enrollment were significantly more likely to report new or worsening acne, dyspareunia, pelvic pain, and dysmenorrhea; participants aged 36-45 years at enrollment were more likely to report new or worsening weight increase. Discontinuation for adverse events occurred in 322 (18.8%) participants, most commonly related to expulsion (n=65 [3.8%]). Only 39 (2.2%) IUS users discontinued as a result of bleeding symptoms. Pelvic infection was diagnosed in 14 (0.8%) participants. CONCLUSION: This LNG 52-mg IUS is highly effective and safe over 5 years of use in U.S. females. CLINICAL TRIAL REGISTRATION: Clinicaltrials.gov, NCT00995150. FUNDING SOURCE: Medicines360.
UR - http://www.scopus.com/inward/record.url?scp=85058921903&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85058921903&partnerID=8YFLogxK
U2 - 10.1097/AOG.0000000000003034
DO - 10.1097/AOG.0000000000003034
M3 - Article
C2 - 30531565
AN - SCOPUS:85058921903
VL - 133
SP - 63
EP - 70
JO - Obstetrics and Gynecology
JF - Obstetrics and Gynecology
SN - 0029-7844
IS - 1
ER -