Weinberger 2002.
Methods | Design: cluster‐RT Groups:
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Participants | Pharmacies: 36 (12 pharmacies per group) Pharmacy worker: ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Pharmacy user: 1113 patients with asthma or COPD (447 PCP; 363 PFMCG; 303 UCCG)
Setting: urban Country: Indianapolis, USA |
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Interventions |
Pharmacy worker‐directed intervention: included an overview of pharmaceutical care, orientation to study, interpretation and use of data, measuring PEF, resources.
Pharmacy worker control: pharmacists received 4‐hour training, but were excluded from PCP ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Pharmacy user‐directed intervention: patients received individualised handouts based on problems associated with specific clinical data stored on the computer
Pharmacy user control: usual care |
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Outcomes |
Pharmacy worker: not assessed ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ Pharmacy user:
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Notes | Study/intervention name: none given Funding source: Agency for Healthcare Research and Quality and the Health Services Research and Development Service, Department of Veteran Affairs (grant 5 R01 HS09083) Weinberger 2001 (cited under Weinberger 2002) also refers to the same study. |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Low risk | Used random number chart |
Allocation concealment (selection bias) | Low risk | Quote: "interviewers, blinded to study group assignment, obtained informed consent and conducted baseline interviews. After completing the interview, the laptop computer used to administer interviews revealed the patient’s study group assignment.” At that time, interviewers distributed peak flow meters as appropriate. |
Baseline outcome measures similar | Low risk | Differences between groups controlled for in analyses |
Baseline characteristics similar | Low risk | Differences between groups controlled for in analyses |
Incomplete outcome data (attrition bias) All outcomes | High risk | Dropouts had worse breathing problems at 12 months |
Blinding of outcome assessment (detection bias) All outcomes | Low risk | Interviewers blinded |
Protection against contamination | Low risk | Cluster randomised |
Selective reporting (reporting bias) | Low risk | Not noted |
Other bias | High risk | Fidelity may have been low, as pharmacists only implemented protocol approximately 50% of the time |
Blinding of participants and personnel (performance bias) All outcomes | High risk | Pharmacists aware of groupings |