Table 4: Summary of Meta-Analysis of Studies Investigating the Effectiveness of Behavioural Interventions on HbA1c in Patients with Type 2 Diabetes.
| Group | Estimate of effect [95% Confidence Interval] |
Statistical heterogeneity (I2) |
|---|---|---|
| Overall | -0.44 [-0.60, -0.29] | 8% |
| Quality | ||
| High Quality | -0.50 [-0.75, -0.26] | 40% |
| Low Quality | -0.37 [-0.62, -0.13] | 0% |
| Intervention length | ||
| Intervention length < 6 weeks | -0.42 [-0.68, -0.15] | 28% |
| Intervention length 6 weeks to 1 year | -0.43 [-0.74, -0.12] | 47% |
| Intervention length = 1 year | -0.68 [-1.22, -0.14] | 0% |
| Setting of Care | ||
| Community-based setting | -0.48 [-0.70, -0.26] | 11% |
| Primary Care setting | -0.42 [-0.68, -0.15] | 28% |
| Interventionist | ||
| Interventionist < 2 disciplines | -0.44 [-0.66, -0.22] | 40% |
| Interventionist ≥ 2 disciplines | -0.51 [-0.84, -0.17] | 0% |
| Baseline HbA1c | ||
| Baseline HbA1c <9.0 | -0.40 [-0.55, -0.24] | 0% |
| Baseline HbA1c ≥9.0 | -0.79 [-1.23, -0.34] | 0% |
| Mode of Delivery | ||
| Group sessions | -0.47 [-0.66, -0.28] | 6% |
| Individual sessions* | -0.80 [-1.35, -0.25] | NA* |
| Combined | -0.30 [-0.57, -0.02] | 0% |
| Ethnicity | ||
| Hispanic Population | -0.42 [-0.71, -0.13] | 0% |
| Non-Hispanic Population | -0.46 [-0.66, -0.25] | 25% |
*
Based on one study