title: Survival in frontotemporal lobar degeneration in a Korean population.
abstract: Frontotemporal lobar degeneration (FTLD) can be subdivided into frontotemporal dementia (FTD), FTD combined with motor neuron disease (FTD-MND), semantic dementia (SD), and progressive nonfluent aphasia (PNFA). FTLD has been considered a rare disorder, and its' demographic and survival data have rarely been studied in Asian population. A survival analysis using the Kaplan-Meier method was performed for 121 consecutive patients with clinically diagnosed FTLD who attended the Memory Disorder Clinic at Samsung Medical Center in Seoul, Republic of Korea, between January 1995 and September 2006. The overall median survival from the onset of the first symptom was 9.6 years (95% CI=8.3-10.8 y). The survival was shortest in FTD-MND (3 y) and longest in SD (11.3 y). The median survival time of FTD (9.8 y) was shorter than that of SD and longer than that of FTD-MND and PNFA. The use of the Cox proportional-hazards model to examine the effect of demographics on survival revealed that only age at onset was associated with survival. In general, our data are comparable with those from the Western countries. However, the female proportion was greater across all subtypes of FTLD and the survival of patients with PNFA was shorter than those of other groups.
authors.affiliation: *Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine †Department of Psychiatry, Yonsei University College of Medicine ¶Department of Neurology, Ewha Womans University Mokdong Hospital, Seoul ‡Occupational Safety and Health Research Institute, Korea Occupational Safety and Health Agency, Incheon §Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon ∥Department of Neurology, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea.
authors.forename: Sue J
authors.initials: SJ
authors.lastname: Kang
authors.forename: Kyung Ryeol
authors.initials: KR
authors.lastname: Cha
authors.forename: Sang Won
authors.initials: SW
authors.lastname: Seo
authors.forename: Eun A
authors.initials: EA
authors.lastname: Kim
authors.forename: Hae-Kwan
authors.initials: HK
authors.lastname: Cheong
authors.forename: Eun-Joo
authors.initials: EJ
authors.lastname: Kim
authors.forename: Duk L
authors.initials: DL
authors.lastname: Na
authors.forename: Jee H
authors.initials: JH
authors.lastname: Jeong
mesh_terms: D000368:Aged; D005260:Female; D057174:Frontotemporal Lobar Degeneration / Q000401:mortality*; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D056910:Republic of Korea / Q000453:epidemiology; D016019:Survival Analysis