Table 2.

Cases ‘captured’ and ‘not captured’ by notification and hospitalization data, after adjustment for estimated false-positive reporting in hospital data

	Hospitalization data
Notification data	Captured	Not captured	All cases
Captured	466 (nN,A)	129	595 (nN)
Not captured	0 to 22*	0 to 6	0 to 28
All cases	466 to 488 (nA)	129 to 135	(N) 595 to 623

Non-italicized numbers have been observed in the data. Italicized numbers have been calculated based on assumptions described in the text. N was calculated using the Chapman estimator (here showing the upper limit):

^*An estimated upper limit of 22 true cases of meningococcal disease which were admitted to hospital, but not recorded in notification data