Table 1.
Assessment schedule
| Assessment/procedure | Enrolment | Baseline | Allocation | 3-month follow-up | 6-month follow-up |
| Informed consent | x | ||||
| Randomisation (oxygen or air group) | x | ||||
| Resting arterial blood gas (if SpO2 <93%) | x | ||||
| StepWatch activity monitor (for 7 days) | x | x | x | ||
| Physical activity level (GENEActiv) (for 7 days) | x | x | x | ||
| Oxygen saturation in daily life (for 2 days) | x | x | x | ||
| 6-minute walk test | x | x | x | ||
| HRQL–SGRQ, K-BILD, EQ-5D-5L | x | x | x | ||
| Dyspnoea-12 | x | x | x | ||
| Fatigue Severity Questionnaire | x | x | x | ||
| Anxiety/depression (HADS) | x | x | x | ||
| Biochemical analysis | x | x | x | ||
| Portable oxygen concentrator usage (hours) | x | x | |||
| Patient telephone calls (monthly) | x | x | x | ||
| Adverse events | x | x | |||
| Economic evaluation | x |
HADS, Hospital Anxiety and Depression Scale; HRQL, health-related quality of life; K-BILD, King’s Brief Interstitial Lung Disease questionnaire; SGRQ, St George’s Respiratory Questionnaire; SpO2, oxyhaemoglobin saturation.