Table 1.
Characteristics of index cases with and without family studies
s.d., Standard deviation; HAM/TSP, HTLV-1-associated myelopathy/tropical spastic paraparesis.
t test for age and Pearson χ2 test for the other variables.
Data are presented as absolute numbers and percentages (within parentheses), except for age, which is expressed as mean±s.d. in years.
Data of some index cases were missing; percentages were calculated on available data.
A total of 185 were blood donors; 8 were found positive during a general health check up and 4 tested positive during a HTLV-1 surveillance study.
Other diseases: 110 strongyloidiasis; 52 infective dermatitis; 31 other dermatological problems; 20 adult T-cell leukaemia/lymphoma; 14 uveitis; 12 diverse other diseases.