title: Randomized comparison of two Internet-supported fertility-awareness-based methods of family planning.
abstract: BACKGROUND
  The aim was to compare the efficacy and acceptability of two Internet-supported fertility-awareness-based methods of family planning.
  
  
  METHODS
  Six hundred and sixty-seven women and their male partners were randomized into either an electronic hormonal fertility monitor (EHFM) group or a cervical mucus monitoring (CMM) group. Both groups utilized a Web site with instructions, charts and support. Acceptability was assessed online at 1, 3 and 6 months. Pregnancy rates were determined by survival analysis.
  
  
  RESULTS
  The EHFM participants (N=197) had a total pregnancy rate of 7 per 100 users over 12 months of use compared with 18.5 for the CMM group (N=164). The log rank survival test showed a significant difference (p<.01) in survival functions. Mean acceptability for both groups increased significantly over time (p<.0001). Continuation rates at 12 months were 40.6% for the monitor group and 36.6% for the mucus group.
  
  
  CONCLUSIONS
  In comparison with the CMM, the EHFM method of family planning was more effective. All users had an increase in acceptability over time. Results are tempered by the high dropout rate.
authors.affiliation: Marquette University, College of Nursing, Milwaukee, WI 53233, USA. richard.fehring@marquette.edu
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Fehring
authors.forename: Mary
authors.initials: M
authors.lastname: Schneider
authors.forename: Kathleen
authors.initials: K
authors.lastname: Raviele
authors.forename: Dana
authors.initials: D
authors.lastname: Rodriguez
authors.forename: Jessica
authors.initials: J
authors.lastname: Pruszynski
mesh_terms: D000328:Adult; D000465:Algorithms; D002582:Cervix Mucus / Q000378:metabolism; D004970:Estrone / Q000031:analogs & derivatives / Q000652:urine; D005191:Family Characteristics; D005260:Female; D006801:Humans; D057194:Intention to Treat Analysis; D020407:Internet; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D012252:Natural Family Planning Methods; D010342:Patient Acceptance of Health Care; D010352:Patient Dropouts; D010353:Patient Education as Topic; D011247:Pregnancy; D018873:Pregnancy Rate; D012648:Self Care; D055815:Young Adult
chemical_list: C015856:estrone-3-glucuronide; D004970:Estrone