Table 4.

Extrapolation of study findings to the entire NHS

Percentages found in this study	Estimated annual numbers of patients if study findings are applied to:
	General surgery outpatients (n = 4.4 million)	All outpatient attendances (n = 66 million)
1.5% missing medical records	66,300	991,300
15% missing clinical information	663,000	9,913,000
4.7% impact on patient care	207,700	3,106,000
1.7% new appointment booked	75,150	1,124,000
3.2% decision without information	141,500	2,115,000
3% risk of harm	132,600	1,983,000