Study To Understand Fall Reduction and Vitamin D in You (STURDY)

• ClinicalTrials.gov Identifier: NCT02166333
• Recruitment Status: Terminated
• First Posted: June 18, 2014
• Last Update Posted: May 29, 2020
• Sponsor: Johns Hopkins University
• Collaborator: National Institute on Aging (NIA)
• Information provided by (Responsible Party): Johns Hopkins University

Tracking Information

• First Submitted Date: June 16, 2014
• First Posted Date: June 18, 2014
• Last Update Posted Date: May 29, 2020
• Actual Study Start Date: June 30, 2015
• Actual Primary Completion Date: May 31, 2019 (Final data collection date for primary outcome measure)
• Current Primary Outcome Measures (submitted: January 19, 2018): Time to first fall (or death)-recorded in months [ Time Frame: 24 months ]
• Original Primary Outcome Measures (submitted: June 16, 2014): Time to first fall [ Time Frame: A daily fall diary will be collected monthly for 36 months after randomization. ]
• Current Secondary Outcome Measures (submitted: January 19, 2018): Change in gait speed [ Time Frame: 2 years ]
• Original Secondary Outcome Measures: Not Provided
• Current Other Pre-specified Outcome Measures: Not Provided
• Original Other Pre-specified Outcome Measures: Not Provided

Descriptive Information

• Brief Title: Study To Understand Fall Reduction and Vitamin D in You
• Official Title: Vitamin D Supplements to Prevent Falls in Older Adults: A Dose-Response Trial
• Brief Summary: Vitamin D supplements might substantially reduce the risk of falls, potentially by more than 25%. The proposed study is a clinical trial that will determine the effects of 4 doses of vitamin D (200 International Units [IU]/day, 1000 IU/day, 2000 IU/d and 4000 IU/d) as a means to prevent falls in high-risk adults, ages 70 and older. Results of this trial will be directly relevant to public health and clinical guidelines, and will immediately influence policy.

Detailed Description

The public health burden of falls in older persons is substantial. Several lines of evidence suggest that vitamin D supplements might reduce the risk of falls, potentially by 25% or more in persons with low serum 25-hydroxyvitamin D [25(OH)D] levels. However, existing evidence is inconsistent and insufficient to guide policy. The trial is a seamless two-stage, Bayesian response-adaptive, randomized dose-finding trial designed to select the best dose of vitamin D supplementation and to potentially confirm the efficacy of that dose for fall prevention and other related outcomes. Participants will be community-dwelling adults, aged 70+ (goal of ~40% black, ~60% women), with a baseline serum 25(OH)D level of 10-29 ng/ml, who are at high risk for falling.

In Stage 1 of the adaptive design, participants will be randomly assigned to one of four vitamin D3 (cholecalciferol) doses: 200 IU/d, 1000 IU/d, 2000 IU/d, or 4000 IU/d, with assignment probabilities that will vary as falls are reported. Participants will take their assigned pills for two years, or until the study ends, whichever comes first. This stage of the design will select the best dose of vitamin D for prevention of falls, or confirm the futility of distinguishing any differences among the doses for fall prevention. If a best dose is selected, subsequent participants will be randomized in Stage 2 of the trial into the comparison (200 IU/d) or best dose group, and all participants (Stage 1 and Stage 2) will continue to be followed to potentially confirm efficacy. The investigators anticipate enrolling approximately 1,200 participants over the entire length of the project.

The primary outcome is time to first fall (or death) over two years of therapy. Next in importance is the outcome of gait speed. Other outcomes include fall rates, types of falls, balance, muscle strength, frailty, Short Physical Performance Battery (SPPB) score, 6-minute walk time, and physical activity assessed by accelerometry. Falls will be ascertained from fall calendars completed daily by participants and from self-report by phone. In-person follow-up visits will occur at 3, 12, and 24 months, with telephone visits occurring at 1, 6, 9, 15, 18, and 21 months after randomization. Subgroups with potential for greater benefit from vitamin D supplementation are blacks, those with baseline 25(OH)D of 10-19 ng/ml, and those with objective evidence of low physical function.

• Study Type: Interventional
• Study Phase: Not Applicable
• Study Design: Allocation: Randomized; Intervention Model: Parallel Assignment; Masking: Triple (Participant, Care Provider, Investigator); Primary Purpose: Prevention

Condition

• Vitamin D Deficiency
• Falls

Intervention

• Dietary Supplement: 200 IU/d cholecalciferol
  Other Name: vitamin D3
• Dietary Supplement: 1000 IU/d cholecalciferol
  Other Name: vitamin D3
• Dietary Supplement: 2000 IU/d cholecalciferol
  Other Name: vitamin D3
• Dietary Supplement: 4000 IU/d cholecalciferol
  Other Name: vitamin D3

Study Arms

• Active Comparator: 200 IU/d
  200 IU/d cholecalciferol (vitamin D3) tablets that can be swallowed or consumed sublingually
  Intervention: Dietary Supplement: 200 IU/d cholecalciferol
• Active Comparator: 1000 IU/d
  1000 IU/d cholecalciferol (vitamin D3) tablets that can be swallowed or consumed sublingually
  Intervention: Dietary Supplement: 1000 IU/d cholecalciferol
• Active Comparator: 2000 IU/d
  2000 IU/d cholecalciferol (vitamin D3) tablets that can be swallowed or consumed sublingually
  Intervention: Dietary Supplement: 2000 IU/d cholecalciferol
• Active Comparator: 4000 IU/d
  4000 IU/d cholecalciferol (vitamin D3) tablets that can be swallowed or consumed sublingually
  Intervention: Dietary Supplement: 4000 IU/d cholecalciferol

• Publications *: Michos ED, Mitchell CM, Miller ER 3rd, Sternberg AL, Juraschek SP, Schrack JA, Szanton SL, Walston JD, Kalyani RR, Plante TB, Christenson RH, Shade D, Tonascia J, Roth DL, Appel LJ; STURDY Collaborative Research Group. Rationale and design of the Study To Understand Fall Reduction and Vitamin D in You (STURDY): A randomized clinical trial of Vitamin D supplement doses for the prevention of falls in older adults. Contemp Clin Trials. 2018 Oct;73:111-122. doi: 10.1016/j.cct.2018.08.004. Epub 2018 Aug 20. Erratum in: Contemp Clin Trials. 2020 Mar;90:105936.

Recruitment Information

• Recruitment Status: Terminated
• Actual Enrollment (submitted: June 24, 2019): 688
• Original Estimated Enrollment (submitted: June 16, 2014): 1200
• Actual Study Completion Date: June 7, 2019
• Actual Primary Completion Date: May 31, 2019 (Final data collection date for primary outcome measure)

Eligibility Criteria

Inclusion Criteria:

• Age 70 and older
• Non-institutionalized
• High risk for falling, defined by a 'yes' response to at least one of the following:
• 1. Have you fallen and hurt yourself in the past year?
• 2. Have you fallen 2 or more times in the past year?
• 3. Are you afraid that you might fall because of balance or walking problems?
• 4. Do you have difficulty maintaining your balance when bathing, dressing, or getting in and out of a chair?
• 5. Do you use a cane, walker, or other device when walking inside or outside your home?
• Serum vitamin D [25(OH)D] level of 10-29 ng/ml
• Able to provide informed consent
• Willing to accept randomization to each vitamin D dose
• One of the following:
• 1. No vitamin D supplementation at baseline
• 2. Average daily vitamin D supplementation judged by study staff as being consistent with the goal of 1000 IU/day or less at screening and willing to continue the dose unchanged throughout the trial
• One of the following:
• 1. No calcium supplementation at baseline
• 2. Average daily calcium supplementation judged by study staff as being consistent with the goal of 1200 mg/day or less at screening and willing to continue the dose unchanged throughout the trial

Exclusion Criteria:

• Cognitive impairment, defined by Mini-Mental State Exam (MMSE) score <24
• Hypercalcemia, serum Ca++ 11.0 mg/dl or higher or >10.5 mg/dl (confirmed)
• Hypocalcemia, serum Ca++ <8.5 mg/dl
• Kidney, ureteral, or bladder stones made of calcium compounds (2 or more in lifetime, or 1 in the last 2 years); in the absence of information on the type of stone, stones will be assumed to be made of calcium compounds
• Planning to move out of area within 2 years, where plans would prevent compliance with the study protocol
• Disease or condition expected to cause death or to prevent compliance with the study protocol in the next 2 years
• Participation in another trial of vitamin D or falls, or any trial that might affect the risk of falls
• Lactose allergy (lactose intolerance is okay)
• Use of any form of oral or injected calcitriol (brand names: Rocaltrol (R), Calcijex (R), and Zemplar (R); generic names: calcitriol, paricalcitol, doxycalcitriol, 22-oxacalcitriol)

Sex/Gender

• Sexes Eligible for Study: All

• Ages: 70 Years and older (Older Adult)
• Accepts Healthy Volunteers: Yes
• Contacts: Contact information is only displayed when the study is recruiting subjects
• Listed Location Countries: United States

Administrative Information

• NCT Number: NCT02166333
• Other Study ID Numbers: IRB00063914; U01AG047837 ( U.S. NIH Grant/Contract )
• Has Data Monitoring Committee: Yes
• U.S. FDA-regulated Product: Not Provided
• IPD Sharing Statement: Not Provided
• Responsible Party: Johns Hopkins University
• Study Sponsor: Johns Hopkins University
• Collaborators: National Institute on Aging (NIA)
• Investigators: Not Provided
• PRS Account: Johns Hopkins University
• Verification Date: May 2020