Measurement properties of pulmonary function measurement and patient-reported outcome measures in patients with multiple rib fracture without flail segment; validation study alongside the multicenter FixCon trial.

In 30 seconds

This multicenter validation study, conducted alongside a randomized controlled trial, assessed pulmonary function, pain, and health-related quality-of-life measures in 180 adults with multiple rib fractures without a flail segment. Spirometry, five pain questions, EQ-5D-5L, and SF-12 were evaluated over follow-up. Pain and HR-QoL measures showed moderate to large change from 30 days to 12 months, while spirometry changes ranged from trivial for tidal volume to moderate for FVC. The authors concluded that these measures are suitable for monitoring recovery and measuring treatment effects over time.

Key findings

• From 30 days to 12 months, spirometry showed trivial change in tidal volume, small change in inspiratory capacity and FEV1, and moderate change in FVC.
• All five pain measures and EQ-5D-5L and SF-12 scales showed moderate to large change from 30 days to 12 months.
• Ceiling effects occurred for all pain questions from 30 days onwards and for the EQ-5D-5L utility score from 3 months onwards.
• Construct and longitudinal validity were adequate for all scales except construct validity of the SF-12 Physical Component Summary.

Why it matters

Outcome measures need to capture recovery reliably and detect change over time. This study supports the use of pain and HR-QoL measures, alongside spirometry—particularly FVC responsiveness—for assessing recovery after multiple rib fractures. Ceiling effects in pain scores and the EQ-5D-5L utility score may limit their ability to distinguish patients at some follow-up points.

What to keep in mind

Ceiling effects were present in pain measures and the EQ-5D-5L utility score at specified follow-up points; construct validity was not adequate for the SF-12 Physical Component Summary.