Table 3.

Knowledge of the environmental impact of inhalers

QuestionAnswerCorrect answers, n (%)
Relative size of carbon footprint of MDIs compared with DPIsMDI footprint 18 times DPI footprint42/102 (41.2)
Average proportion of doses left unused in MDIs at disposalAverage 48% of doses left unused in MDI18/102 (17.6)
Proportion of NHS carbon footprint represented by inhalersInhalers represent 4% of NHS carbon footprint31/102 (30.4)
  • DPIs = dry powder inhalers; MDIs = metered dose inhalers.