Table 6.
Subgroup analyses within the analysis of standardized primary outcomes.
| Subgroup | N of studies | Hedges’ g | 95% CI | I2 | |
| Duration a |
|
|
|
|
|
|
|
Short (<12 months) | 15 | –0.43 | –0.57, –0.29 | 69% |
|
|
Long (≥12 months) | 22 | –0.12 | –0.19, –0.06 | 41% |
| Type of prevention a |
|
|
|
|
|
|
|
Primary (including diabetes control) | 33 | –0.25 | –0.32, –0.17 | 72% |
|
|
Secondary | 4 | –0.20 | –0.34, –0.06 | 0% |
| Primary prevention: age subgroups b |
|
|
|
|
|
|
|
Not all older than 50 years | 29 | –0.23 | –0.33, –0.14 | 72% |
|
|
All older than 50 years | 4 | –0.30 | –0.51, –0.09 | 80% |
| Internet only vs controlc | 14 | –0.15 | –0.23, –0.07 | 40% | |
| Blended vs controld | 26 | –0.33 | –0.43, –0.22 | 79% | |
a Subgroup analysis performed in the sample of studies that was used for the analysis of primary outcomes.
b Subgroup analysis performed on the sample of studies that targeted primary prevention (including diabetes control).
c Subgroup analysis performed on the sample of studies that evaluated an Internet-only intervention. In case a study tested multiple arms, the appropriate arm was included in the analysis.
d Subgroup analysis performed on the sample of studies that evaluated a blended intervention. In case a study tested multiple arms, the appropriate arm was included in the analysis.