Vera Halpern

Summary

Affiliation: Family Health International
Country: USA

Publications

  1. doi request reprint The effects of spermicides containing nonoxynol-9 on cervical cytology
    Vera Halpern
    Family Health International, PO Box 13950, Research Triangle Park, NC 13950, USA
    Contraception 77:191-4. 2008
  2. doi request reprint Predictors of pregnancy in microbicide trials
    Vera Halpern
    FHI, P O Box 13950, Research Triangle Park, NC 27709, USA
    Contraception 83:436-40. 2011
  3. pmc Interim data monitoring to enroll higher-risk participants in HIV prevention trials
    Vera Halpern
    Family Health International, Research Triangle Park, NC, USA
    BMC Med Res Methodol 9:44. 2009
  4. pmc Effectiveness of cellulose sulfate vaginal gel for the prevention of HIV infection: results of a Phase III trial in Nigeria
    Vera Halpern
    Family Health International, Research Triangle Park, North Carolina, United States of America
    PLoS ONE 3:e3784. 2008
  5. doi request reprint Notes on the frequency of routinely collected and self-reported behavioral data in HIV prevention trials
    Douglas J Taylor
    FHI, 2224 East Highway 54, Durham, NC 27713, USA
    AIDS Behav 15:389-95. 2011
  6. ncbi request reprint Spermicide used alone for contraception
    David A Grimes
    Obstetrics and Gynecology, University of North Carolina, School of Medicine, CB 7570, Chapel Hill, North Carolina, USA, 27599 7570
    Cochrane Database Syst Rev 9:CD005218. 2013
  7. doi request reprint What predicts non-retention in microbicide trials?
    Paul J Feldblum
    FHI, Research Triangle Park, NC 27709, USA
    Contemp Clin Trials 32:512-6. 2011
  8. ncbi request reprint Spermicide used alone for contraception
    David A Grimes
    Obstetrics and Gynecology, University of North Carolina, School of Medicine, CB 7570, Chapel Hill, North Carolina, USA, 27599 7570
    Cochrane Database Syst Rev 12:CD005218. 2013
  9. doi request reprint Strategies to improve adherence and acceptability of hormonal methods of contraception
    Vera Halpern
    Clinical Sciences, FHI 360, PO Box 13950, Research Triangle Park, North Carolina, USA, NC 27709
    Cochrane Database Syst Rev 10:CD004317. 2013
  10. ncbi request reprint Baseline factors associated with incident HIV and STI in four microbicide trials
    Paul J Feldblum
    Family Health International, Research Triangle Park, NC 27709, USA
    Sex Transm Dis 37:594-601. 2010

Detail Information

Publications12

  1. doi request reprint The effects of spermicides containing nonoxynol-9 on cervical cytology
    Vera Halpern
    Family Health International, PO Box 13950, Research Triangle Park, NC 13950, USA
    Contraception 77:191-4. 2008
    ..This analysis was undertaken to compare the effect of the different dosages and formulations of spermicides containing nonoxynol-9 (N-9) on cervical cytology...
  2. doi request reprint Predictors of pregnancy in microbicide trials
    Vera Halpern
    FHI, P O Box 13950, Research Triangle Park, NC 27709, USA
    Contraception 83:436-40. 2011
    ..We performed this analysis to identify baseline participant characteristics associated with increased risk of pregnancy in recent vaginal microbicide trials...
  3. pmc Interim data monitoring to enroll higher-risk participants in HIV prevention trials
    Vera Halpern
    Family Health International, Research Triangle Park, NC, USA
    BMC Med Res Methodol 9:44. 2009
    ..We evaluated the effectiveness of interim monitoring of HIV infection rates and on-going modification of recruitment strategies to enroll women at higher risk of HIV in the Cellulose Sulfate Phase III study in Nigeria...
  4. pmc Effectiveness of cellulose sulfate vaginal gel for the prevention of HIV infection: results of a Phase III trial in Nigeria
    Vera Halpern
    Family Health International, Research Triangle Park, North Carolina, United States of America
    PLoS ONE 3:e3784. 2008
    ..This trial evaluated the safety and effectiveness of 6% cellulose sulfate vaginal gel in preventing male-to-female vaginal transmission of HIV, gonorrhea and chlamydial infection...
  5. doi request reprint Notes on the frequency of routinely collected and self-reported behavioral data in HIV prevention trials
    Douglas J Taylor
    FHI, 2224 East Highway 54, Durham, NC 27713, USA
    AIDS Behav 15:389-95. 2011
    ..Results were comparably informative in the reduced case, suggesting that unnecessarily extensive amounts of routine behavioral data may be collected in these trials...
  6. ncbi request reprint Spermicide used alone for contraception
    David A Grimes
    Obstetrics and Gynecology, University of North Carolina, School of Medicine, CB 7570, Chapel Hill, North Carolina, USA, 27599 7570
    Cochrane Database Syst Rev 9:CD005218. 2013
    ..Spermicides contain an active ingredient (most commonly nonoxynol-9) and a formulation used to disperse the product, such as foam or vaginal suppository...
  7. doi request reprint What predicts non-retention in microbicide trials?
    Paul J Feldblum
    FHI, Research Triangle Park, NC 27709, USA
    Contemp Clin Trials 32:512-6. 2011
    ..Identifying factors associated with non-retention could lead to recruitment of women more likely to remain in the trial, potentially yielding greater efficiency and validity...
  8. ncbi request reprint Spermicide used alone for contraception
    David A Grimes
    Obstetrics and Gynecology, University of North Carolina, School of Medicine, CB 7570, Chapel Hill, North Carolina, USA, 27599 7570
    Cochrane Database Syst Rev 12:CD005218. 2013
    ..Spermicides contain an active ingredient (most commonly nonoxynol-9) and a formulation used to disperse the product, such as foam or vaginal suppository...
  9. doi request reprint Strategies to improve adherence and acceptability of hormonal methods of contraception
    Vera Halpern
    Clinical Sciences, FHI 360, PO Box 13950, Research Triangle Park, North Carolina, USA, NC 27709
    Cochrane Database Syst Rev 10:CD004317. 2013
    ..Despite their high theoretical effectiveness, typical use results in much lower effectiveness. In large part, this disparity reflects difficulties in adherence to the contraceptive regimen and low rates for long-term continuation...
  10. ncbi request reprint Baseline factors associated with incident HIV and STI in four microbicide trials
    Paul J Feldblum
    Family Health International, Research Triangle Park, NC 27709, USA
    Sex Transm Dis 37:594-601. 2010
    ..We applied Cox regression models to assess the relationships between baseline demographic, reproductive and behavioral factors and incident HIV, STIs and RTIs...
  11. doi request reprint Pelvic surgery and hospitalization among Chilean women after nonsurgical sterilization with quinacrine pellets between 1977 and 1989
    Paul J Feldblum
    FHI 360, P O Box 13950, Research Triangle Park, NC 27709, USA
    Contraception 86:106-9. 2012
    ..Concern about quinacrine lingers because of its carcinogenic effects in rats. We describe results of long-term follow-up of women who underwent quinacrine pellet sterilization in Chile between 1977 and 1989 (N=1492)...
  12. doi request reprint Steroid hormones for contraception in men
    David A Grimes
    Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
    Cochrane Database Syst Rev 3:CD004316. 2012
    ..Administration of sex steroids to men can shut off sperm production through effects on the pituitary and hypothalamus. However, this approach also decreases production of testosterone, so 'add-back' therapy is needed...