Table 2

Two source capture–recapture adjustments applied to the main sources of case ascertainment (general practioners, hospital coding lists/physicians/neurologists, and the MS society) by county.

Co. WexfordCo. Donegal
GPsHospital coding lists/physicians/ neurologistsMS societyGPsHospital coding lists/physicians/ neurologistsMS society
GPs, general practitioners.
Total in source (a+b)46108339676174
Unique to source (b)620381138
Common to all sources (a)4088308865136
Not in source (c)80189314416466
Unobserved (bc/a)1249132718
Estimated size of population a+b+c+(bc/a)138130135253267258
Coverage (%)91.396.993.394.989.993.0
Ascertainment adjusted prevalence (per 100 000)132.2124.6129.3194.6205.4198.5