From: Effectiveness of one-on-one coaching in improving pressurized metered dose inhaler (pMDI) technique among COPD patients: a prospective clinical study
Follow-up interval
Number of patients
Number of patients with improvement at follow-up
Percentage (%) of patients with improvement
1–3 months
25
9
36%
3–6 months
6
24%
6–9 months
18
2
11%
9–12 months
4
50%