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. 2000 Jan 15;320(7228):145–147. doi: 10.1136/bmj.320.7228.145

Table 1.

Demographic and clinical details of study subjects

No (%) of records obtained (n=705) No (%) of records not obtained (n=780) Total (n=1485)
Sex:
 Male 389 (55.2) 434 (55.6) 823 (55.4)
 Female 316 (44.8) 346 (44.4) 662 (44.6)
Age group (years):
 15-19  93 (13.2) 129 (16.5) 222 (14.9)
 20-24  92 (13.0) 105 (13.5) 197 (13.3)
 25-29 113 (16.0) 101 (12.9) 214 (14.4)
 30-34 114 (16.2) 118 (15.1) 232 (15.6)
 35-39 122 (17.3) 133 (17.1) 255 (17.2)
 40-44 171 (24.3) 194 (24.9) 365 (24.6)
Disease group:
 Cerebral degenerations usually manifest in childhood 58 (8.2) 62 (7.9) 120 (8.1)
 Encephalitis, myelitis, and encephalomyelitis 140 (19.9) 102 (13.1) 242 (16.3)
 Other cerebral degenerations 128 (18.2) 177 (22.7) 305 (20.5)
 Other extrapyramidal disease and abnormal movement disorder 160 (22.7) 218 (27.9) 378 (25.5)
 Other non-organic psychoses  8 (1.1) 14 (1.8) 22 (1.5)
 Senile and presenile organic psychotic conditions 15 (2.1) 17 (2.2) 32 (2.2)
 Slow virus infection of central nervous system  82 (11.6) 50 (6.4) 132 (8.9)
 Spinocerebellar disease 114 (16.2) 140 (17.9) 254 (17.1)
Period of death:
 1979-84  77 (10.9) 337 (43.2) 414 (27.9)
 1985-9 123 (17.4) 292 (37.4) 415 (27.9)
 1990-6 505 (71.6) 151 (19.4) 656 (44.2)