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1.
Int J Tuberc Lung Dis ; 9(12): 1349-54, 2005 Dec.
Article in English | MEDLINE | ID: mdl-16466057

ABSTRACT

SETTING: An urban tuberculosis (TB) clinic, The Gambia. OBJECTIVE: To identify patient characteristics associated with increased rates of defaulting from treatment, specifically knowledge and cost factors amenable to intervention. DESIGN: Prospective cohort study of TB cases at least 15 years of age commencing treatment, interviewed by semi-structured questionnaire and followed for attendance at thrice-weekly directly observed treatment (DOT). RESULTS: Of 301 patients, 76 (25.2%) defaulted from treatment and 25 did not return for treatment. The defaulting rate was higher among those who said they were uncertain that their treatment would work (HR 3.64; 95%CI 1.42-9.31, P = 0.007) and among those who incurred significant time or money costs travelling to receive treatment (HR 2.67; 95%CI 1.05-6.81; P = 0.04). These factors had differing effects with respect to time: uncertainty over treatment success was important in the first 90 days of treatment, while increased cost of travelling to the clinic was important after 90 days. CONCLUSION: In The Gambia, risk groups for defaulting can be recognised at the start of treatment and are at highest risk at different times. Home-based self-administration of medications after 3 months of DOT should be considered as confidence in treatment success rises, and the costs of travelling to receive treatment start to take their toll.


Subject(s)
Antitubercular Agents/administration & dosage , Health Expenditures , Health Knowledge, Attitudes, Practice , Treatment Refusal , Tuberculosis/drug therapy , Adolescent , Adult , Antitubercular Agents/economics , Cohort Studies , Female , Gambia , Humans , Male , Risk Factors , Socioeconomic Factors , Tuberculosis/economics , Tuberculosis/psychology
2.
Neuroreport ; 15(12): 1987-91, 2004 Aug 26.
Article in English | MEDLINE | ID: mdl-15305151

ABSTRACT

Schizophrenia is characterized by thought disorders, hallucinations and delusions. Genetic studies have shown a high linkage at chromosome 6q16-21. Among the genes located in this region is the glutamate receptor ionotropic kainate 2 gene (GRIK2 or GLUR6), a functional candidate for susceptibility to schizophrenia. In this study, transmission of GRIK2 was evaluated in 356 schizophrenic patients from three different clinical centers. Whereas paternal transmission shows equilibrium, we observed maternal transmission disequilibrium of GRIK2 in the largest population (p=0.03), which was still significant when all populations were added (p=0.05). These results are similar to the maternal GRIK2 transmission disequilibrium previously reported for autism, and support the presence of a susceptibility gene for schizophrenia at 6q16.


Subject(s)
Linkage Disequilibrium , Mothers , Receptors, Kainic Acid/genetics , Schizophrenia/genetics , Alleles , Case-Control Studies , Chromosomes, Human, Pair 6 , Disease Susceptibility , Female , Genomics , Genotype , Humans , Male , Polymorphism, Single Nucleotide , GluK2 Kainate Receptor
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