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91.
Multi-state stochastic models are widely used to model stages of disease progression in survival analysis. This paper develops flowgraph models for data analysis in survival analysis. We illustrate these methods using data from a study of diabetic retinopathy consisting of 277 subjects with insulin-dependent (type I) diabetes mellitus (IDDM). These data were collected at the Eye-Kidney Clinic of the Barbara Davis Center for Childhood Diabetes at the University of Colorado Health Sciences Center. 相似文献
92.
Mohan AK Hauptmann M Linet MS Ron E Lubin JH Freedman DM Alexander BH Boice JD Doody MM Matanoski GM 《Journal of the National Cancer Institute》2002,94(12):943-948
We evaluated breast cancer mortality through 1997 among 69 525 female radiologic technologists who were certified in the United States from 1926 through 1982 and who responded to our questionnaire. Risk of breast cancer mortality was examined according to work history and practices and was adjusted for known risk factors. Breast cancer mortality risk was highest among women who were first employed as radiologic technologists prior to 1940 (relative risk [RR] = 2.92, 95% confidence interval [CI] = 1.22 to 7.00) compared with risk of those first employed in 1960 or later and declined with more recent calendar year of first employment (P for trend =.002). Breast cancer mortality risk increased with increasing number of years of employment as a technologist prior to 1950 (P for trend =.018). However, risk was not associated with the total number of years a woman worked as a technologist. Technologists who first performed fluoroscopy (RR = 1.69, 95% CI = 1.02 to 3.11) and multifilm procedures (RR = 1.87, 95% CI = 1.04 to 3.34) before 1950 had statistically significantly elevated risks compared with technologists who first performed these procedures in 1960 or later. The high risks of breast cancer mortality for women exposed to occupational radiation prior to 1950 and the subsequent decline in risk are consistent with the dramatic reduction in recommended radiation exposure limits over time. 相似文献
93.
To decide on an alternate procedure for placement of central vein catheters other than percutaneous access of the subclavian vein, we conducted a study of 46 women who underwent placement of a central venous catheter utilizing the cephalic vein procedure at Ruby Memorial Hospital at West Virginia University in Morgantown. Of these patients, 96% had a successful placement of a catheter into the subclavian vein following dissection of the cephalic vein within the deltopectoral groove. There were no cases of pneumothorax or injury to the great vessels during the surgical procedure, which is a significant advantage for women who often have significant pleural effusions. 相似文献
94.
At a time when many children and families are faced with enormous daily life hassles and major stressful events, it is crucial
to understand issues pertaining to childhood stress and coping. The present study examined children and parents’ perceptions
of childhood stressors and children’s coping actions. Findings reveal that children report higher stress levels than parents.
The stressors identified by children range from peer related stressful situations such as being laughed at to internal factors
such as lack of control, and major life events such as death of a loved one. Children and parents report a large range of
coping actions with three predominant themes—cognitive, social, and emotional coping strategies. Implications for practice
are discussed.
This research was supported by a General University Research Program Grant from the University of Delaware. 相似文献
95.
Kasat LS Waingankar VS Kamat T Anilkumar Bahety G Meisheri IV 《Pediatric surgery international》2000,16(5-6):443-444
A 2-month-old, full-term male presented with a left scrotal faecal fistula due to spontaneous bursting of an incarcerated
inguinal hernia for 8 days, with complete decompression of the small bowel through it. Resection and end-to-end anastomosis
of the engaged ileal loop was successfully done after incising the ring via the inguinal approach. Only two such cases have
been reported in the world literature to date.
Accepted: 26 April 1999 相似文献
96.
97.
Leptospirosis is a zoonotic disease caused by leptospiral spirochaete. Two cases in children are described presenting with hepatorenal dysfunction. 相似文献
98.
Twelve patients with lingual thyroid are reviewed. Two of these patients had a follicular carcinoma in the ectopic gland and both are well 5 and 16 years after treatment. The diagnosis is essentially clinical but confirmation may be made with a thyroid scan. Six patients were treated conservatively with thyroxine with good results. Six patients were treated by surgical excision, 2 undergoing autotransplantation of the excised gland into the anterior abdominal wall. 相似文献
99.
100.
An unusual case of giant prostatic calculus associated with urinary incontinence is presented. The calculus was removed suprapubically and the postoperative course was uneventful except for continuing incontinence. An incontinence procedure was performed with satisfactory results. 相似文献