Browsing by Author "Valdivia, G"

Now showing 1 - 4 of 4
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    Chronic obstructive pulmonary disease in five Latin American cities (the PLATINO study): a prevalence study
    (ELSEVIER SCIENCE INC, 2005) Menezes, AMB; Perez Padilla, R; Jardim, JRB; Muino, A; Lopez, MV; Valdivia, G; de Oca, MM; Talamo, C; Hallal, PC; Victoria, CG; PLATINO Team
    Background Both the prevalence and mortality attributable to chronic obstructive pulmonary disease (COPD) seem to be increasing in low-income and middle-income countries, but few data are available. The aim of the PLATINO study, launched in 2002, was to describe the epidemiology of COPD in five major Latin American cities: Sao Paulo (Brazil), Santiago (Chile), Mexico City (Mexico), Montevideo (Uruguay), and Caracas (Venezuela).
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    Consumption of tobacco in people aged under 18 year: Prevalence study in students in Chile (vol 132, pg 171, 2004)
    (SOC MEDICA SANTIAGO, 2004) Valdivia, G; Simonetti, F; Cumsille, P; Ramirez, V; Hidalgo, CG; Palma, B; Carrasco, J
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    Late motor deficits of Chilean manganese miners: A blinded control study
    (1996) Hochberg, F; Miller, G; Valenzuela, R; McNelis, S; Crump, KS; Covington, T; Valdivia, G; Hochberg, B; Trustman, JW
    High-level chronic manganese (Mn) exposure produces dystonic rigidity and proximal tremor. The late effects of asymptomatic exposure are uncertain. To evaluate hand movements of asymptomatic Chilean miners, we utilized a manual tremormeter (EAP) and a digitizing tablet (MOVEMAP). In Andacollo, Chile, we examined 59 individuals aged >50 years (mean age, 64.4 years). Twenty-seven exposed miners had heavy Mn dust exposure in Mn mines for more than 5 years (mean duration, 20.25 years), ending at least 5 years previously. Thirty-two control miners had never worked in Mn mines or had short-term Mn employment. Tests of resting tremor (EAP Tremormeter, MOVEMAP Steady paradigm), action tremor (MOVEMAP Square paradigm), and repetitive hand movements (EAP Tapping Test and Ortho-kinesimeter) differentiated performance of exposed miners from that of controls. Chronic asymptomatic Mn exposure results in detectable late-life abnormalities of movement.
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    Smoking habit in school age children, in Chile
    (SOC MEDICA SANTIAGO, 2004) Valdivia, G; Simonetti, F; Cumsille, P; Ramirez, V; Hidalgo, CG; Palma, B; Carrasco, J
    Background: In Chile, there is no information about the prevalence of smoking among basic and high school students. Aim: To study the prevalence of smoking among school age population.