Table 2 Lower and upper bound threshold values that define the traffic light system by aim
Aim | Lower bound threshold | Upper bound threshold |
|---|---|---|
Aim 1 | ||
 Acceptability | < 60% | ≥ 80% |
 Recruitment rate | < 40% | ≥ 60% |
 Eligibility rate | < 60% | ≥ 80% |
 Consent rate | < 80% | ≥ 90% |
 Participation rates | < 50% | ≥ 70% |
 Retention rates | < 40% | ≥ 60% |
Aim 2 | ||
 Pearson’s correlation | < .60 | ≥ .70 |
 Bland-Altman analyses | > 10% of observations beyond M ± 2SD | ≤ 5% of observations beyond M ± 2SD |
Aim 3 | ||
 Acceptability: Quantitative | < 75% | ≥ 85% |
 Acceptability: Qualitative | At least one potentially serious problem | Absence of a potentially serious problem |
Aim 4 | ||
 Intent to treat | < 0.00 | ≥ 0.20 |
 Complier average causal effect | < 0.00 | ≥ 0.20 |
 Indirect effects | Not available | Not available |