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Group comparison of perceived usefulness of forced expiration technique and specific cough technique (n = 6).
| Number of participants either agreeing or strongly agreeing with the assertion for each technique | Forced expiration technique | Specific cough technique |
|---|---|---|
| Easy to understand instruction | 6 | 6 |
| Easy to perform | 5 | 6 |
| Effective at clearing sputum | 5 | 6 |
| Easy to use in daily treatment | 3 | 5 |
| Normalising in everyday life | 2 | 4 |
| Tiring to use | 3 | 2 |
| Get tired/breathless from using it | 1 | 2 |
