Table 2.
Study completion rates, overall and by treatment allocation
| All subjects (N=84) | Cherry extract (n=41) | Diet modification (n=43) | |
|---|---|---|---|
|
| |||
| Physician office communication | |||
| Gout diagnosis confirmation | 100% | 100% | 100% |
| ACR gout classification criteria | 94% | 93% | 95% |
| Internet study visits with survey assessments | |||
| Baseline assessment | 100% | 100% | 100% |
| 3-month assessment | 93% | 100% | 86% |
| 6-month assessment | 81% | 90% | 72% |
| 9-month assessment | 69% | 78% | 60% |
| Serum urate blood draw testing1 | |||
| Baseline | 100% | 100% | 100% |
| 9-month | 77% | 83% | 72% |
| 2-weekly Gout flare assessment2 | 75% | 82% | 69% |
| Telephone support sessions for diet modification (Dietitian) | |||
| Baseline | -- | -- | 83% |
| 6-month | -- | -- | 87% |
| 9-month | -- | -- | 86% |
| Telephone support sessions for cherry extract adherence (study coordinator) | |||
| Baseline | -- | 97% | -- |
| 1-month | -- | 90% | -- |
| 4-month | -- | 81% | -- |
All study procedures and visits were completed over the Internet by participants in the comfort of their homes, or on the phone
1
Serum urate blood draw was done at the Quest Laboratory site closest to the patient residence or by patient choice, and results were reported directly to the study team in a HIPAA-compliant method
2
Two- weekly Gout flare assessments were done via the Internet; non-responders received a follow-up phone call to complete the brief questionnaire on the phone lasting <2 minutes