Incidence and Prevalence of Multiple Sclerosis in Malmö, Southern Sweden

Figure 3

Flowchart of case retrieval and ascertainment. NPR: National patient register; MS: multiple sclerosis; SMSreg: Swedish MS registry; PPMS: primary progressive MS. ^†Twenty-five out of 52 resident in the study area on the prevalence day, 12 out of 52 with PPMS diagnosis (all of them with onset before the incidence study period, 5 out of 12 living in the study area on prevalence day). ^††All with onset within the incidence study period and living in the study area at that time. All living in the study area on prevalence day. ^§Thirty out of 46 had possible MS and 2 out of 30 with onset within the incidence study period and living in the study area at that time. ^§§Onset within the incidence study period and living in the study area at that time.