Table 3 Additional data analysis
Mean (SD) number of errors associated with prescription components (maximum number of errors = 14)Difference (95% CI), unpaired data analysisp Value
Group 1, BNFC (n = 25)Group 2, Wheel (n = 27)
Dose errors, both weight groups8.6 (2.84)0.6 (0.93)−8 (−6.78 to −9.22)4.98×10−14
MDI/MDF errors, both weight groups7.6 (2.68)2.7 (2.18)−4.9 (−3.53 to −6.27)4.41×10−9
Mean (SD) number of errors associated with prescription components (maximum number of errors = 14)Difference (95% CI), paired data analysisp Value
Dose errorsMDI/MDF errors
Group 1, BNFC (n = 25)8.6 (2.84)7.6 (2.68)−1.04 (−2.31 to 0.23)0.12
Group 2, Wheel (n = 27)0.6 (0.93)2.7 (2.18)2.15 (1.32 to 2.98)2.70×10−5
Mean (SD) number of correct prescriptions (maximum = 7 for each weight group)Difference (95% CI), paired data analysisp Value
10 kg child23 kg child
Group 1, BNFC (n = 25)2.2 (1.65)1.3 (1.22)−0.84 (−1.26 to −0.42)0.0006
Group 2, Wheel (n = 27)5.4 (1.42)5.5 (1.42)0.11 (0.72 to −0.50)0.73
Mean (SD) number of correct prescriptions (maximum = 14 for each “grade” group)Difference (95% CI), unpaired data analysisp Value
Consultant/SAS doctorsTrainees
Group 1, BNFC (n = 25)2.7 (2.76)4.1 (2.59)1.34 (−0.18 to 2.86)0.228
Group 2, Wheel (n = 27)10 (2.31)11.8 (2.08)1.79 (0.59 to 2.99)0.046
  • Comparison of the mean number of dose and MDI/MDF errors made by groups 1 and 2, the mean number of correct prescriptions in each weight group and the mean number of correct prescriptions by consultants/staff and associate specialist (SAS) doctors and trainees (ST3 and above). Data analysed using the t test (see table for indication of paired data).