Recruitment and screening for the testosterone trials

Jane A. Cauley, Laura Fluharty, Susan S. Ellenberg, Thomas M. Gill, Kristine E. Ensrud, Elizabeth Barrett-Connor, Denise Cifelli, Glenn R. Cunningham, Alvin M. Matsumoto, Shalender Bhasin, Marco Pahor, John T. Farrar, David Cella, Raymond C. Rosen, Susan M. Resnick, Ronald S. Swerdloff, Cora E. Lewis, Mark E. Molitch, Jill P. Crandall, Alisa J. Stephens-Shields & 9 others Thomas W. Strorer, Christina Wang, Stephen Anton, Shehzad Basaria, Susan Diem, Vafa Tabatabaie, Darlene Dougar, Xiaoling Hou, Peter J. Snyder

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Background. We describe the recruitment of men for The Testosterone (T) Trials, which were designed to determine the efficacy of T treatment. Methods. Men were eligible if they were ≥65 years, had an average of two morning total T values 300 ng/mL, and had symptoms and objective evidence of mobility limitation, sexual dysfunction, and/or low vitality. Men had to be eligible for and enroll in at least one of these three main trials (physical function, sexual function, vitality). Results. Men were recruited primarily through mass mailings in 12 U.S. communities: 82% of men who contacted the sites did so in response to mailings. Men who responded were screened by telephone to ascertain eligibility. Of 51,085 telephone screens, 53.5% were eligible for further screening. Of 23,889 initial screening visits (SV1), 2,781 (11.6%) men were eligible for the second screening visit (SV2), which 2,261 (81.3%) completed. At SV2, 931 (41.2%) men met the criteria for one or more trials, the T level criterion and had no other exclusions. Of these, 790 (84.6%) were randomized; 99 (12.5%) in all three trials and 348 (44%) in two trials. Their mean age was 72 years and mean body mass index (BMI) was 31.0 kg/m2. Mean (standard deviation) total T (ng/dL) was 212.0 (40.0). Conclusion: Despite the telephone screening to enrollment ratio of 65 to 1, we met the recruitment goals for each trial. Recruitment of symptomatic older men with low testosterone levels is difficult but feasible.

Original languageEnglish (US)
Pages (from-to)1105-1111
Number of pages7
JournalJournals of Gerontology - Series A Biological Sciences and Medical Sciences
Volume70
Issue number9
DOIs
StatePublished - 2015

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Testosterone
Telephone
Mobility Limitation
Body Mass Index

Keywords

  • Hypogonadal men
  • Physical function
  • Randomized clinical trials
  • Recruitment
  • Sexual function
  • Testosterone treatment
  • Vitality

ASJC Scopus subject areas

  • Aging
  • Geriatrics and Gerontology

Cite this

Cauley, J. A., Fluharty, L., Ellenberg, S. S., Gill, T. M., Ensrud, K. E., Barrett-Connor, E., ... Snyder, P. J. (2015). Recruitment and screening for the testosterone trials. Journals of Gerontology - Series A Biological Sciences and Medical Sciences, 70(9), 1105-1111. https://doi.org/10.1093/gerona/glv031

Recruitment and screening for the testosterone trials. / Cauley, Jane A.; Fluharty, Laura; Ellenberg, Susan S.; Gill, Thomas M.; Ensrud, Kristine E.; Barrett-Connor, Elizabeth; Cifelli, Denise; Cunningham, Glenn R.; Matsumoto, Alvin M.; Bhasin, Shalender; Pahor, Marco; Farrar, John T.; Cella, David; Rosen, Raymond C.; Resnick, Susan M.; Swerdloff, Ronald S.; Lewis, Cora E.; Molitch, Mark E.; Crandall, Jill P.; Stephens-Shields, Alisa J.; Strorer, Thomas W.; Wang, Christina; Anton, Stephen; Basaria, Shehzad; Diem, Susan; Tabatabaie, Vafa; Dougar, Darlene; Hou, Xiaoling; Snyder, Peter J.

In: Journals of Gerontology - Series A Biological Sciences and Medical Sciences, Vol. 70, No. 9, 2015, p. 1105-1111.

Research output: Contribution to journalArticle

Cauley, JA, Fluharty, L, Ellenberg, SS, Gill, TM, Ensrud, KE, Barrett-Connor, E, Cifelli, D, Cunningham, GR, Matsumoto, AM, Bhasin, S, Pahor, M, Farrar, JT, Cella, D, Rosen, RC, Resnick, SM, Swerdloff, RS, Lewis, CE, Molitch, ME, Crandall, JP, Stephens-Shields, AJ, Strorer, TW, Wang, C, Anton, S, Basaria, S, Diem, S, Tabatabaie, V, Dougar, D, Hou, X & Snyder, PJ 2015, 'Recruitment and screening for the testosterone trials', Journals of Gerontology - Series A Biological Sciences and Medical Sciences, vol. 70, no. 9, pp. 1105-1111. https://doi.org/10.1093/gerona/glv031
Cauley, Jane A. ; Fluharty, Laura ; Ellenberg, Susan S. ; Gill, Thomas M. ; Ensrud, Kristine E. ; Barrett-Connor, Elizabeth ; Cifelli, Denise ; Cunningham, Glenn R. ; Matsumoto, Alvin M. ; Bhasin, Shalender ; Pahor, Marco ; Farrar, John T. ; Cella, David ; Rosen, Raymond C. ; Resnick, Susan M. ; Swerdloff, Ronald S. ; Lewis, Cora E. ; Molitch, Mark E. ; Crandall, Jill P. ; Stephens-Shields, Alisa J. ; Strorer, Thomas W. ; Wang, Christina ; Anton, Stephen ; Basaria, Shehzad ; Diem, Susan ; Tabatabaie, Vafa ; Dougar, Darlene ; Hou, Xiaoling ; Snyder, Peter J. / Recruitment and screening for the testosterone trials. In: Journals of Gerontology - Series A Biological Sciences and Medical Sciences. 2015 ; Vol. 70, No. 9. pp. 1105-1111.
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AU - Cauley, Jane A.

AU - Fluharty, Laura

AU - Ellenberg, Susan S.

AU - Gill, Thomas M.

AU - Ensrud, Kristine E.

AU - Barrett-Connor, Elizabeth

AU - Cifelli, Denise

AU - Cunningham, Glenn R.

AU - Matsumoto, Alvin M.

AU - Bhasin, Shalender

AU - Pahor, Marco

AU - Farrar, John T.

AU - Cella, David

AU - Rosen, Raymond C.

AU - Resnick, Susan M.

AU - Swerdloff, Ronald S.

AU - Lewis, Cora E.

AU - Molitch, Mark E.

AU - Crandall, Jill P.

AU - Stephens-Shields, Alisa J.

AU - Strorer, Thomas W.

AU - Wang, Christina

AU - Anton, Stephen

AU - Basaria, Shehzad

AU - Diem, Susan

AU - Tabatabaie, Vafa

AU - Dougar, Darlene

AU - Hou, Xiaoling

AU - Snyder, Peter J.

PY - 2015

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