The Fertile Window or Fertility Window: Chance of fertilization with intercourse for menstrual cycle day relative to ovulation date. [37]
English: The Fertile Window or Fertility Window, marks the eight days with the highest chance of getting pregnant during a woman's menstural cycle when having intercourse. It is also known as targeted intercourse and it is used in fertility awareness methods. The Fertile Window typically ranges from day -7 to day +2 with day 0 as the ovulation date. Although not all studies have found couples getting pregnant every day during this time, it typically spans to approximately 8 days, from day -6 to day +1 from the ovulation date. The average chance of getting pregnant during this 8 days interval is typically higher than 2%. The Fertile Window (FW) or chances of getting pregnant can be affected by many factors including age, health, sleep, etc. Thus, even though the span of 8 days is normal, the height (or probability) in this chart can be lower or higher. References: a) Schwartz, Daniel, et al. "Donor insemination: conception rate according to cycle day in a series of 821 cycles with a single insemina on." Fertility and sterility 31.2 (1979): 226-229. b) Schwartz, D., P. D. M. MacDonald, and V. Heuchel. "Fecundability, coital frequency and the viability of ova." Popula on studies 34.2 (1980): 397-400. c) Bremme, J. Sexualverhalten und Konzeptionswahrscheinlichkeit. Diss. Med Disserta on, Universität Düsseldorf, 1991. d) Weinberg, C. R., et al. "The probability of conception as related to the ming of intercourse around ovula on." Genus (1998): 129-142. e) Wilcox, Allen J., Clarice R. Weinberg, and Donna D. Baird. "Post-ovulatory ageing of the human oocyte and embryo failure." Human Reproduc on 13.2 (1998): 394-397. f) Colombo, Bernardo, and Guido MasaroIo. "Daily fecundability: -rst results from a new database." Demographic research 3 (2000). g) Dunson, David B., Bernardo Colombo, and Donna D. Baird. "Changes with age in the level and duration of fertility in the menstrual cycle." Human reproduc on 17.5 (2002): 1399-1403. h) Wilcox, Allen J., Clarice R. Weinberg, and Donna D. Baird. "Timing of sexual intercourse in rela on to ovula on—eOects on the probability of concep on, survival of the pregnancy, and sex of the baby." N Engl J Med 1995.333 (1995): 1517-1521. i) Dunson, D. B., et al. "Assessing human fertility using several markers of ovula on." Sta s cs in medicine 20.6 (2001): 965-978. j) Dunson, David B., et al. "Day-speci-c probabili es of clinical pregnancy based on two studies with imperfect measures of ovula on." Human Reproduc on 14.7 (1999): 1835-1839. k) Stanford, Joseph B., and David B. Dunson. "Effects of sexual intercourse patterns in me to pregnancy studies." American Journal of Epidemiology 165.9 (2007): 1088-1095. l) Frank-Herrmann, Petra, et al. "Determina on of the fer le window: Reproduc ve competence of women–European cycle databases." Gynecological endocrinology 20.6 (2005): 305-312. m) Dunson, David B., and Clarice R. Weinberg. "Accounting for unreported and missing intercourse in human fertility studies." Sta s cs in Medicine 19.5 (2000): 665-679. n) Bilian, Xiao, et al. "Conception probabili es at different days of menstrual cycle in Chinese women." Fertility and sterility 94.4 (2010): 1208- 1211. o) Stanford, Joseph B., and David B. Dunson. "Effects of sexual intercourse patterns in me to pregnancy studies." American Journal of Epidemiology 165.9 (2007): 1088-1095. p) Lynch, Courtney D., et al. "Es ma on of the day‐speci-c probabili es of conception: current state of the knowledge and the relevance for epidemiological research." Paediatric and Perinatal Epidemiology 20.s1 (2006): 3-12. q) Dunson, David B., and Clarice R. Weinberg. "Modeling human fertility in the presence of measurement error." Biometrics 56.1 (2000): 288-292. r) Wilcox, Allen J., Clarice R. Weinberg, and Donna D. Baird. "Post-ovulatory ageing of the human oocyte and embryo failure." Human Reproduc on 13.2 (1998): 394-397. s) Kühnert, Bianca, and Eberhard Nieschlag. "Reproduc ve func ons of the ageing male." Human reproduc on update 10.4 (2004): 327-339. t) Stanford, Joseph B., George L. White Jr, and Harry Hatasaka. "Timing intercourse to achieve pregnancy: current evidence." Obstetrics & Gynecology 100.6 (2002): 1333-1341.