Daniel Strickland

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RATIONALE Single-site clinic-based studies suggest an increasing prevalence of pulmonary nontuberculous mycobacteria (NTM) disease, but systematic data are lacking. OBJECTIVES To describe prevalence and trends for NTM lung disease at four geographically diverse integrated heath care delivery systems in the United States. METHODS We abstracted(More)
Normal values for umbilical arterial and venous pH, PCO2, PO2, and bicarbonate must be known before these parameters can be used for assistance in clinical decisions. We evaluated the cord blood from 146 infants born after uncomplicated labor and vaginal deliveries at 37 to 42 weeks' gestation. All infants had a normal baseline fetal heart rate and normal(More)
CONTEXT Epidemiologic studies have reported that cigarette smoking is inversely associated with Parkinson disease (PD). However, questions remain regarding the effect of age at smoking onset, time since quitting, and race/ethnicity that have not been addressed due to sample size constraints. This comprehensive assessment of the apparent reduced risk of PD(More)
AIMS The association of trauma and physical activity with ALS is controversial. We explored the relation in a pilot case-control study. MATERIAL AND METHODS ALS patients were selected from a university muscle disease clinic and paired with two matched controls: one from the clinic, but having different diseases, and one from the community. RESULTS We(More)
OBJECTIVE To examine the association between chorioamnionitis and childhood asthma based on gestational age at birth and race/ethnicity. DESIGN A retrospective cohort study using the Kaiser Permanente Southern California (KPSC) Matched Perinatal records. SETTING Kaiser Permanente Southern California, Pasadena, California. PARTICIPANTS All singleton(More)
OBJECTIVE To examine trends in primary cesarean deliveries by indications and race/ethnicity. STUDY DESIGN We examined temporal trends in primary cesarean deliveries from 1991 through 2008 among singleton births (n = 540,953) in Kaiser Permanente Southern California hospitals using information from maternal hospitalizations and infant birth certificates.(More)
A solid understanding of the descriptive epidemiology of a disease is essential in etiologic investigations; this includes prevalence and incidence, as well as groups within the larger community who may have noticeably lower or higher rates. We ascertained the usefulness of a non-traditional registry in describing Parkinson's disease (PD) patterns in a(More)
OBJECTIVE The purpose of this study was to examine whether the recurrence risk of preterm premature rupture of membranes (PPROM) is modified by the interpregnancy interval (IPI). STUDY DESIGN We used the Missouri 1989-1997 longitudinally linked data to examine the recurrence risk of PPROM in women with first 2 (n = 150,929) and first 3 (n = 30,011)(More)
BACKGROUND The iron hypothesis suggests that females are protected from atherosclerosis by having lower iron stores than men, thus limiting oxidation of lipids. OBJECTIVE To test the iron hypothesis by comparing cardiovascular event rates in whole blood donors compared with nondonors. DESIGN Prospective cohort with telephone survey follow up. SETTING(More)
OBJECTIVES To assess the relationship of the distribution of serum prostate-specific antigen (PSA) to age in a population of subjects for whom PSA levels were determined as part of a health fair. METHODS Between March 19 and March 28, 1993, 1716 men aged 40 to 79 years from eastern Nebraska who participated in "The Health Fair of the Midlands" provided(More)