Optimizing Retention in a Pragmatic Trial of Community-Living Older Persons: The STRIDE Study

OBJECTIVES

The Strategies to Reduce Injuries and Develop Confidence in Elders (STRIDE) study is testing the effectiveness of a multifactorial intervention to prevent serious fall injuries. Our aim was to describe procedures that were implemented to optimize participant retention; report retention yields by age, sex, clinical site, and follow-up time; provide reasons for study withdrawals; and highlight the successes and lessons learned from the STRIDE retention efforts.

DESIGN

Pragmatic cluster randomized trial.

SETTING

A total of 86 primary care practices within 10 US healthcare systems.

PARTICIPANTS

A total of 5451 community-living persons, 70 years of age or older, at high risk for serious fall injuries.

MEASUREMENTS

Study outcomes were collected every 4 months by a central call center. Reconsent was required to extend follow-up beyond the originally planned 36 months.

RESULTS

Over a median follow-up of 3.2 years (interquartile range = 2.8-3.7 y), 439 (8.1%) participants died and 600 (11.0%) withdrew their consent or did not reconsent to extend follow-up beyond 36 months, yielding rates (per 100 person-years) of deaths and withdrawals of 2.6 and 3.6, respectively. The withdrawal rate increased with advancing age, was comparable for men and women, and did not differ much by clinical site. The most common reasons for withdrawal were illness and unable to contact for reconsent at 36 months. Completion of the follow-up interviews was greater than 93% at each time point. Most participants completed all (71.8%) or all but one (9.2%) of the follow-up interviews. The most common reason for not completing a follow-up interview was unable to contact, with rates ranging from 2.8% at 40 months to 4.6% at 20 months.

CONCLUSION

Completion of the thrice-yearly follow-up interviews in STRIDE was high, and retention of participants over 44 months exceeded the original projections. The procedures used in STRIDE, together with lessons learned, should assist other investigators who are planning or conducting large pragmatic trials of vulnerable older persons. J Am Geriatr Soc 68:1242-1249, 2020.

Step by step: integrating evidence-based fall-risk management into senior centers

PURPOSE

Our purpose in this project was to conceptualize and implement evidence-based fall-prevention programming into senior centers. We present challenges to this process and strategies to overcome them.

DESIGN AND METHODS

We carried out a dissemination project in nine diverse senior centers in Connecticut. Participants included investigators from the Connecticut Collaboration for Fall Prevention (CCFP), senior center administrators, and trained staff interventionists implementing a program of fall prevention based on the Yale Frailty and Injury Cooperative Studies of Intervention Trials (known as the Yale FICSIT). Using CCFP materials that were based on the stages of change, senior center staff developed methods to integrate fall-prevention programming into their centers. We extracted implementation challenges, and the strategies that senior center staff developed to overcome them, from the minutes of monthly work-group meetings. Monthly counts of individual assessments were also a source of data.

RESULTS

Challenges included staffing and the delineation of authority, structural issues, engaging senior center membership, cultural issues, and the modification of existing practices. Each senior center devised site-specific methods to overcome these challenges when CCFP investigators convened work-group meetings. We developed creative strategies to inform senior center membership about fall prevention, and in the first 18 months, 4% of members scheduled individual assessments.

IMPLICATIONS

The challenges of integrating evidence-based fall-prevention programming into existing senior center services can be negotiated by collaboration among senior center administrators, health providers, the center membership, and researchers. This experience suggests that senior centers may be important venues to reach older adults with fall-prevention programming.

Two recruitment strategies for a clinical trial of physically frail community-living older persons

OBJECTIVES

To compare the efficiency and cost of two distinct but complementary recruitment strategies for a clinical trial of physically frail, community-living persons, age 75 and older.

DESIGN

In the first recruitment strategy, potential participants were identified and screened for physical frailty during office visits to their primary care physicians; in the second, potential participants were identified from the patient rosters of primary care physicians and were screened for physical frailty in their home. Physical frailty was defined on the basis of slow gait speed and inability to stand from a chair with one's arms folded.

SETTING

General community in greater Bridgeport, Connecticut.

PARTICIPANTS

Community-living persons, age 75 and older, who met criteria for physical frailty.

MEASUREMENTS

Measures of efficiency included the number of persons screened for each participant randomized, the number of persons eligible for each participant randomized, and the refusal rate. Costs were calculated per randomized participant.

RESULTS

One hundred eighty-eight participants, with a mean age of 83.2 years, were enrolled over 22 months. One hundred and one participants were enrolled via the office-based strategy; 87 were enrolled via the roster-based strategy. Participants in each group had considerable quadriceps weakness and performed poorly on objective measures of gait and upper- and lower-extremity function. For each participant randomized, the number of persons screened, number of persons eligible, and cost were 15.2, 1.2, and $868, respectively, for the office-based strategy and 11.6, 1.1, and $764, respectively, for the roster-based strategy. The corresponding refusal rates for the two strategies were 14.9% and 10.1%, respectively (P < .001).

CONCLUSIONS

Although each recruitment strategy successfully identified older persons who were physically frail, the roster-based strategy was less expensive and performed modestly better on each measure of efficiency than the office-based strategy.