Table 2 Certainty of Evidence Table
Intervention and Outcome | Number of studies | Study limitations | Consistency | Precision | Other factors | Overall Certainty of Evidence |
|---|---|---|---|---|---|---|
Certainty of Evidence for Missed Clinic Visits | ||||||
 Providing free NEMT transportation reduces missed clinic visits | 7 (3 controlled trials; 4 observational studies) | Serious | No serious inconsistency | No serious imprecision | Very strong mechanism | High |
Certainty of Evidence for ED Visits | ||||||
 Providing free transportation NEMT does not affect ED visit rate | 2 (1 controlled trial; 1 observational study) | Serious | No serious inconsistency | Serious imprecision | N/A | Low |
Certainty of Evidence for Costs | ||||||
 Providing brokerage service NEMT transport reduces overall healthcare costs | 1 (observational study) | Not serious | N/A | No serious imprecision | Data restricted to patients with diabetes and children with asthma | Low |
Certainty of Evidence for Health Outcomes | ||||||
 Providing free NEMT improves health outcomes | 1 (observational study) | Not Serious | N/A | No serious imprecision | Data restricted to patients with diabetes and children with asthma | Low |
 Providing free rideshare transport (NMT) improves health outcomes | 1 (observational study) | Very Serious | N/A | Serious imprecision | N/A | Very Low |