Nahafizadeh 2010.
| Study characteristics | ||
| Methods |
Design: parallel‐group randomised controlled trial; blinding not stated Duration: 2 months Setting: "outpatients", Iran Trial registration: not reported |
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| Participants |
Population: 46 people with asthma randomised to inhaler technique education (n = 25) or no education/usual care (n = 20) Age: mean age (SD) across both group 48 (13) years Baseline asthma severity: "According to ACT score, none of patients were in complete asthma control at the beginning" Inclusion criteria: not reported Exclusion criteria: not reported Percentage withdrawn: not reported Other allowed medication: not reported |
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| Interventions |
Intervention summary: face‐to‐face education about proper use of inhalers (no further details) Control summary: usual care (no further details) |
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| Outcomes |
Outcomes measured: asthma control (ACT) and FEV1 Technique assessment method used: inhaler technique not reported |
|
| Notes |
Type of publication: conference abstract Funding: not reported |
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| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Unclear risk | "randomly placed"; no further details |
| Allocation concealment (selection bias) | Unclear risk | No details |
| Blinding of participants and personnel (performance bias) All outcomes | High risk | No description of procedures intended to blind participants or personnel to group assignment |
| Blinding of outcome assessment (detection bias) All outcomes | High risk | No description of procedures intended to blind outcome assessors to group assignment; for patient‐reported outcomes, such as ACT, participant was the outcome assessor |
| Incomplete outcome data (attrition bias) All outcomes | Low risk | No description of drop‐outs but numbers reported and related percentages suggest that only 1 person did not complete the study |
| Selective reporting (reporting bias) | Unclear risk | No prospective trial registration identified. Minimal details, as reported as conference abstract only. Unclear how "complete control" is defined. Unclear how many participants were included in the analyses at each time point |
| Other bias | Low risk | None noted |