Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1975 1
1981 2
1982 2
1985 1
1987 1
1990 1
1993 13
1998 1
1999 2
2004 2
2005 1
2006 3
2007 1
2008 1
2009 2
2011 3
2012 7
2013 5
2014 2
2015 1
2016 5
2017 2
2018 5
2019 6
2020 5
2023 2
2024 0

Text availability

Article attribute

Article type

Publication date

Search Results

71 results

Results by year

Filters applied: Free full text. Clear all
Page 1
In Reply.
Römer T. Römer T. Dtsch Arztebl Int. 2020 Apr 3;117(14):252. doi: 10.3238/arztebl.2020.0252. Dtsch Arztebl Int. 2020. PMID: 32449899 Free PMC article. No abstract available.
Natural Family Planning.
Wiesner C. Wiesner C. Dtsch Arztebl Int. 2020 Apr 3;117(14):251. doi: 10.3238/arztebl.2020.0251a. Dtsch Arztebl Int. 2020. PMID: 32449897 Free PMC article. No abstract available.
Global Contraceptive Failure Rates: Who Is Most at Risk?
Bradley SEK, Polis CB, Bankole A, Croft T. Bradley SEK, et al. Stud Fam Plann. 2019 Mar;50(1):3-24. doi: 10.1111/sifp.12085. Epub 2019 Feb 21. Stud Fam Plann. 2019. PMID: 30791104 Free PMC article.
Contraceptive use in Latin America and the Caribbean with a focus on long-acting reversible contraceptives: prevalence and inequalities in 23 countries.
Ponce de Leon RG, Ewerling F, Serruya SJ, Silveira MF, Sanhueza A, Moazzam A, Becerra-Posada F, Coll CVN, Hellwig F, Victora CG, Barros AJD. Ponce de Leon RG, et al. Lancet Glob Health. 2019 Feb;7(2):e227-e235. doi: 10.1016/S2214-109X(18)30481-9. Lancet Glob Health. 2019. PMID: 30683240 Free PMC article.
Perfect-use and typical-use Pearl Index of a contraceptive mobile app.
Berglund Scherwitzl E, Lundberg O, Kopp Kallner H, Gemzell Danielsson K, Trussell J, Scherwitzl R. Berglund Scherwitzl E, et al. Contraception. 2017 Dec;96(6):420-425. doi: 10.1016/j.contraception.2017.08.014. Epub 2017 Sep 4. Contraception. 2017. PMID: 28882680 Free PMC article.
Fertility Awareness Methods: Distinctive Modern Contraceptives.
Malarcher S, Spieler J, Fabic MS, Jordan S, Starbird EH, Kenon C. Malarcher S, et al. Glob Health Sci Pract. 2016 Mar 25;4(1):13-5. doi: 10.9745/GHSP-D-15-00297. Print 2016 Mar. Glob Health Sci Pract. 2016. PMID: 27016540 Free PMC article.
Determinants of unintended pregnancies in rural Ghana.
Eliason S, Baiden F, Yankey BA, Awusabo-Asare K. Eliason S, et al. BMC Pregnancy Childbirth. 2014 Aug 8;14:261. doi: 10.1186/1471-2393-14-261. BMC Pregnancy Childbirth. 2014. PMID: 25104039 Free PMC article.
Author's reply: To PMID 23157145.
Smoley BA. Smoley BA. Am Fam Physician. 2013 Aug 1;88(3):159. Am Fam Physician. 2013. PMID: 24133685 Free article. No abstract available.
Patient education page: natural family planning.
[No authors listed] [No authors listed] Am Fam Physician. 2012 Nov 15;86(10):1-2. Am Fam Physician. 2012. PMID: 23157157 Free article. No abstract available.
Natural family planning.
Smoley BA, Robinson CM. Smoley BA, et al. Am Fam Physician. 2012 Nov 15;86(10):924-8. Am Fam Physician. 2012. PMID: 23157145 Free article. Review.
Continued use of the Standard Days Method.
Sinai I, Lundgren RI, Gribble JN. Sinai I, et al. J Fam Plann Reprod Health Care. 2012 Jul;38(3):150-6. doi: 10.1136/jfprhc-2011-100097. Epub 2011 Aug 20. J Fam Plann Reprod Health Care. 2012. PMID: 21857029 Free article. Clinical Trial.
The rhythm method and embryonic death.
Bovens L. Bovens L. J Med Ethics. 2006 Jun;32(6):355-6. doi: 10.1136/jme.2005.013920. J Med Ethics. 2006. PMID: 16731736 Free PMC article. Review.
Fertility awareness-based methods for contraception.
Grimes DA, Gallo MF, Grigorieva V, Nanda K, Schulz KF. Grimes DA, et al. Cochrane Database Syst Rev. 2004 Oct 18;2004(4):CD004860. doi: 10.1002/14651858.CD004860.pub2. Cochrane Database Syst Rev. 2004. PMID: 15495128 Free PMC article. Review.
Efficacy of the new TwoDay Method of family planning.
Arévalo M, Jennings V, Nikula M, Sinai I. Arévalo M, et al. Fertil Steril. 2004 Oct;82(4):885-92. doi: 10.1016/j.fertnstert.2004.03.040. Fertil Steril. 2004. PMID: 15482764 Free article.
Natural family planning. Author's reply.
Ryder RE. Ryder RE. BMJ. 1993 Nov 20;307(6915):1360. doi: 10.1136/bmj.307.6915.1360-c. BMJ. 1993. PMID: 8257912 Free PMC article. No abstract available.
Natural family planning. Demand is increasing.
Odeblad E. Odeblad E. BMJ. 1993 Nov 20;307(6915):1359. doi: 10.1136/bmj.307.6915.1359-b. BMJ. 1993. PMID: 8257909 Free PMC article. No abstract available.
Papal policy, poverty, and AIDS.
[No authors listed] [No authors listed] BMJ. 1990 Aug 4;301(6746):291-2. BMJ. 1990. PMID: 2390626 Free PMC article. No abstract available.
Ovulation method of natural family planning.
Connell-Tatum EB. Connell-Tatum EB. Fertil Steril. 1981 Nov;36(5):551-2. doi: 10.1016/s0015-0282(16)45849-8. Fertil Steril. 1981. PMID: 7308500 Free article.