Bebb 2007.
| Study characteristics | ||
| Methods |
A cluster randomised controlled trial of the effect of a treatment algorithm for hypertension in patients with type 2 diabetes Cluster RCT (42 clusters), conducted in practices in Nottingham, United Kingdom Two arms: 1) Control arm (control arm) and 2) Intervention arm (intervention arm) |
|
| Participants | Control arm N: 737 Intervention arm N: 797 Diabetes type: type 2 Mean age: 64.3 ± 9.9 % Male: 59.2 Longest follow‐up: 13 months |
|
| Interventions |
Control arm: None Intervention arm: 1) Clinician education |
|
| Outcomes | 1) Antihypertensives (any) 2) Systolic blood pressure 3) Diastolic blood pressure |
|
| Funding source | Fund source: The study was funded by a grant from the NHS Executive, Trent, UK (RBG00XX7) |
|
| Notes | — | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | Information not available. |
| Allocation concealment (selection bias) | Low risk | Cluster RCT. |
| Provider's baseline characteristics (selection bias) | High risk | Table 2. no P values provided. There were some differences between practices in the 2 arms: practices in the intervention arm were smaller, less likely to have agreed a BP target, and more likely to negotiate BP targets with almost all or many patients. |
| Patient's baseline characteristics (selection bias) | High risk | Table 1. No P values provided. The intervention and control arms were similar for most measures, but there were small differences for sex, ethnic group, years since diagnosis of diabetes, and the proportion with macrovascular complications. |
| Patient's baseline outcomes (selection bias) | High risk | Table 1. no P values provided; several rows appear unbalanced |
| Incomplete outcome data (attrition bias) | Low risk | Information not available. |
| Blinding of participants and personnel (performance bias) and of outcome assessors (detection bias) | Low risk | Information not available. |
| Selective reporting (reporting bias) | Low risk | Information not available. |
| Risk of contamination (other bias) | Low risk | Information not available. |
| Other bias | Low risk | Information not available. |