Table 4 Number of participants required to reach equal groups at baseline in simple randomization (values are based on the expected mean ± SD for men and women presented in Tables 2 and 3)
Functional Test | Sample | Allowed difference between groups | # of men required per groupa | # of women required per groupa |
|---|---|---|---|---|
Timed Up and Go | 60+ years | 10% | 42 | 44 |
15% | 19 | 19 | ||
20% | 11 | 11 | ||
Normal Walking Speed | 70–79 years | 10% | 24 | 28 |
15% | 11 | 13 | ||
20% | 6 | 7 | ||
Functional Reach | Hypertensive 80.3 ± 3.9 years | 10% | 51 | 48 |
15% | 23 | 22 | ||
20% | 13 | 13 | ||
Sit-to-Stand | 60–94 years | 10% | 82 | 77 |
15% | 37 | 35 | ||
20% | 21 | 20 | ||
Handgrip Strength | 75–79 years | 10% | 12 | 35 |
15% | 6 | 16 | ||
20% | 3 | 9 | ||
Unipedal Balance Testb | 65–69 years | 10% | 262 | 264 |
15% | 117 | 118 | ||
20% | 66 | 67 |