1cycle(1) Utils cycle(1)
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6 cycle - a calendar for women
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9 cycle
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12 Cycle is a calendar program for women. Given a cycle length or statis‐
13 tics for several periods, it can calculate the days until menstruation,
14 the days of "safe" sex, the fertile period, and the days to ovulations,
15 and define the d.o.b. (date of birth) of a child. It allows the user to
16 write notes and helps to supervise the reception of hormonal contracep‐
17 tive tablets.
18
20 The program is capable of:
21 - Calculate of the days of menstruation, based on length of the cycle
23 or on statistics of a period.
24 - Calculate the "safe" sex days, fertile period and day to ovulations
25 - Definition of D.O.B . (Date Of Birth) of a child
26 - Allows to write notes
27 - Helps to supervise reception of hormonal contraceptive tablets
28
30 It uses the calendar method for the definition of fertile days. For
31 this is necessary to determine duration, at least, of last six cycles.
32 For determine the fertile days it uses this algoritm:
33 - First day: duration of shortest cycle minus 18
35 - Last day: duration of longest cycle minus 11
36 - Ovulation: is considered in the middle of fertile period (Determine
37 the exact day isn't possible with the calendar method)
38 Date of a birth of the child is counted from the beginning of last men‐
40 struation (in obstetrics are accepted 40 weeks). This date is corrected
41 with the duration of a cycle (are subtracted or added same number of
42 days that a cycle differs from 28 days). Is possible check the results
43 at: http://cir.msk.ru/sroki.shtml (in Russian)
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46 It is necessary to mark the beginning of menstruation. This is possible
47 clicking with the right button on the date and chosing "The beginning
48 of a cycle". Similarly the mark can be removed. Using duration of last
49 six cycles, the program will calculate
50 - Fertile period - green cells
53 - Ovulation day (the middle fertile period) - brightly green cell
54 - Beginning of following menstruation - pink cells
55 Cycle duration is set in options or is calculated an average of last
57 six periods.
58 To determine prospective date of a birth of the child, it is necessary
60 first day of last cycle to mark in addition as "Pregnancy".
61 Depending on your purposes, you can display only "Safe" sex days or
63 only fertile days. Information about interesting day can be received
64 clicking with left button.
65 Is possible adding a note to any date using corresponding item of the
67 menu. Day with a note are underlined.
68 It is necessary to note that factor of failures of calendar contracep‐
70 tion method is about 10 percent. This method is suitable only for women
71 with enough regular cycle.
72 If your doctor has recommended hormonal contraceptive this program will
74 help to supervise their reception. Closely familiarize with the
75 instruction applied to the chosen preparation. Packing can contain 21
76 tablet (the circuit of reception 21 day on one tablet, then 7 days
77 pause) or 28 tablets in this case all tablets are accepted without
78 interruption every day of 28. In the program, is marked only day of
79 reception of each first tablet of packing.
80 NOTE: This program is not a reliable contraceptive method. It does nei‐
82 ther help to prevent sexual transmision diseases like AIDS. It is just
83 an electronic means of keeping track of some of your medical data and
84 extract some statistical conclusions from them. You cannot consider
85 this program as a substitute for your gynecologist in any way.
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88 ~/.cycle
89 This is the directory where cycle stores the data.
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92 cycle was written by Oleg S. Gints.
93 This manual page was written for Debian by Miriam Ruiz <lit‐
95 tle_miry@yahoo.es>.
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98 You can find cycle's home page at: http://cycle.sourceforge.net/
99 More information about calendar method are available at:
101 http://www.mama.ru/gynecolog/STA/st18.htm (in Russian)
102Miriam Ruiz 6 April 2005 cycle(1)