Previous research updated the mortality experience of North American synthetic rubber industry workers during the period 1944-1998, determined if leukemia and other cancers were associated with several employment factors and carried out Poisson regression analysis to examine exposure-response associations between estimated exposure to 1,3-butadiene (BD) or other chemicals and cancer. The present study used Cox regression procedures to examine further the exposure-response relationship between several unlagged and lagged, continuous, time-dependent BD exposure indices (BD parts per million (ppm)-years, the total number of exposures to BD concentrations >100 ppm ("peaks") and average intensity of BD) and leukemia, lymphoid neoplasms and myeloid neoplasms. All three BD exposure indices were associated positively with leukemia. Using continuous, untransformed BD ppm-years the regression coefficient (beta) from an analysis that controlled only for age was 2.9 x 10(-4) (p
Calcium urolithiasis is often associated with increased intestinal absorption and urine excretion of calcium, and has been suggested to result from increased vitamin D production. The role of the enzyme 1 alpha-hydroxylase, the rate-limiting step in active vitamin D production, was evaluated in 36 families, including 28 sibships with at least a pair of affected sibs, using qualitative and quantitative trait linkage analyses. Sibs with a verified calcium urolithiasis passage (n = 117) had higher 24-h calciuria (P = 0.03), oxaluria (P = 0.02), fasting and postcalcium loading urine calcium/creatinine (Ca/cr) ratios (P = 0.008 and P = 0.002, respectively), and serum 1,25(OH)2 vitamin D levels (P = 0.02) compared with nonstone-forming sibs (n = 120). Markers from a 9-centiMorgan interval encompassing the VDD1 locus on chromosome 12q13-14 (putative 1 alpha-hydroxylase) were analyzed in 28 sibships (146 sib pairs) of single and recurrent stone formers and in 14 sibships (65 sib pairs) with recurrent-only (> or = 3 episodes) stone-forming sibs. Two-point and multipoint analyses did not reveal excess in alleles shared among affected sibs at the VDD1 locus. Linkage of stone formation to the VDD1 locus could be excluded, respectively, with a lambda d of 2.0 (single and recurrent stone formers) and 3.25 (recurrent stone formers). Quantitative trait analyses revealed no evidence for linkage to 24-h calciuria and oxaluria, serum 1,25(OH)2 vitamin D levels, and Ca/cr ratios. This study shows absence of linkage of the putative 1 alpha-hydroxylase locus to calcium stone formation or to quantitative traits associated with idiopathic hypercalciuria. In addition, there is coaggregation of calciuric and oxaluric phenotypes with stone formation.
OBJECTIVE: A common polymorphism (-1C to T) in the translation initiation sequence of annexin A5 (ANV) gene has recently been associated with a decreased risk of acute myocardial infarction (AMI). The aim of the present study was to analyze the association between the ANV genepolymorphism and the risk of AMI and ischemic sudden cardiac death (SCD) in middle-aged Finnish males. MATERIAL AND METHODS: A case-control study involving three distinct groups of subjects was carried out: (1) victims of SCD (n=98), (2) survivors of AMI (n=212), and (3) randomly selected control subjects without any history of coronary heart disease (n=243). The ANV polymorphism was genotyped in each study group. RESULTS: Among the control group of healthy Finnish males the prevalence rates of the CC, CT, and TT genotypes were 83.1%, 15.2%, and 1.6%, respectively. Among the survivors of AMI, the prevalence rates of CC, CT, and TT were 79.7%, 20.3%, and 0%, respectively, and among the victims of SCD 83.7%, 16.3%, and 0%, respectively. No significant differences in the genotype or allele distributions were observed between the study groups. CONCLUSION: The -1C to T polymorphism in the ANV gene is not associated with the risk of AMI or SCD in middle-aged Finnish males.
Population-based studies on violent crime and background factors may provide an understanding of the relationships between susceptibility factors and crime. We aimed to determine the distribution of violent crime convictions in the Swedish population 1973-2004 and to identify criminal, academic, parental, and psychiatric risk factors for persistence in violent crime.
The nationwide multi-generation register was used with many other linked nationwide registers to select participants. All individuals born in 1958-1980 (2,393,765 individuals) were included. Persistent violent offenders (those with a lifetime history of three or more violent crime convictions) were compared with individuals having one or two such convictions, and to matched non-offenders. Independent variables were gender, age of first conviction for a violent crime, nonviolent crime convictions, and diagnoses for major mental disorders, personality disorders, and substance use disorders.
A total of 93,642 individuals (3.9%) had at least one violent conviction. The distribution of convictions was highly skewed; 24,342 persistent violent offenders (1.0% of the total population) accounted for 63.2% of all convictions. Persistence in violence was associated with male sex (OR 2.5), personality disorder (OR 2.3), violent crime conviction before age 19 (OR 2.0), drug-related offenses (OR 1.9), nonviolent criminality (OR 1.9), substance use disorder (OR 1.9), and major mental disorder (OR 1.3).
The majority of violent crimes are perpetrated by a small number of persistent violent offenders, typically males, characterized by early onset of violent criminality, substance abuse, personality disorders, and nonviolent criminality.
To evaluate the costs, consequences, effectiveness, and safety of ciprofloxacin vs standard antibiotic care in patients with an initial acute exacerbation of chronic bronchitis (AECB) as well as recurrent AECBs over a 1-year period.
A total of 240 patients, 18 years or older with chronic bronchitis, with a history of frequent exacerbations (three or more in the past year) presenting with a type 1 or 2 AECB (two or more of increased dyspnea, increased sputum volume, or sputum purulence).
The assessment included AECB symptoms, antibiotics prescribed, concomitant medications, adverse events, hospitalizations, emergency department visits, outpatient resources such as diagnostic tests, procedures, and patient and caregiver out-of-pocket expenses. Patients completed the Nottingham Health Profile, St. George's Respiratory Questionnaire, and the Health Utilities Index. The parameters were recorded with each AECB and at regular quarterly intervals for 1 year. These variables were compared between the ciprofloxacin-treated group and the usual-care-treated group.
Patients receiving ciprofloxacin experienced a median of two AECBs per patient compared to a median of three AECBs per patient receiving usual care. The mean annualized total number of AECB-symptom days was 42.9+/-2.8 in the ciprofloxacin arm compared to 45.6+/-3.0 days in the usual-care arm (p=0.50). The overall duration of the average AECB was 15.2+/-0.6 days for the ciprofloxacin arm compared to 16.3+/-0.6 days for the usual-care arm. Treatment with ciprofloxacin tended to accelerate the resolution of all AECBs compared to usual care (relative risk=1.20; 95% confidence interval [CI], 0.91 to 1.58; p=0.19). Treatment assignment did not affect the interexacerbation period but a history of severe bronchitis, prolonged chronic bronchitis, and an increased number of AECBs in the past year were associated with shorter exacerbations-free periods. There was a slight, but not statistically significant, improvement in all quality of life measures with ciprofloxacin over usual care. The only factors predictive of hospitalization were duration of chronic bronchitis (odds ratio=4.6; 95% CI, 1.6, 13.0) and severity of chronic bronchitis (odds ratio=4.3; 95% CI, 0.8, 24.6). The incremental cost difference of $578 Canadian in favor of usual care was not significant (95% CI, -$778, $1,932). The cost for the ciprofloxacin arm over the usual care arm was $18,588 Canadian per quality-adjusted life year gained. When the simple base case analysis was expanded to examine the effect of risk stratification, the presence of moderate or severe bronchitis and at least four AECBs in the previous year changed the economic and clinical analysis to one favorable to ciprofloxacin with the ciprofloxacin-treated group having a better clinical outcome at lower cost ("win-win" scenario).
Treatment with ciprofloxacin tended to accelerate the resolution of all AECBs compared to usual care; however, the difference was not statistically significant. Further, usual care was found to be more reflective of best available care rather than usual first-line agents such as amoxicillin, tetracycline, or trimethoprim-sulfamethoxazole as originally expected. Despite the similar antimicrobial activities and broad-spectrum coverage of both ciprofloxacin and usual care, the trends in clinical outcomes and all quality of life measurements favor ciprofloxacin. In patients suffering from an AECB with a history of moderate to severe chronic bronchitis and at least four AECBs in the previous year, ciprofloxacin treatment offered substantial clinical and economic benefits. In these patients, ciprofloxacin may be the preferred first antimicrobial choice.
The prescription of analgesics and anti-inflammatory drugs (analgesics) was studied using computerized patient records from a Finnish health centre with a population base of some 27,000 inhabitants. A random sample of every fifth patient visiting the health centre in 1986 was chosen. This study sample consisted of 4,577 patients with 17,021 physician contacts and altogether 14,035 prescriptions during the 1-year follow-up: of these analgesics comprised 14.8%. The proportion of the study population who received at least one analgesic prescription was 23 +/- 1.2% (95% CI). The use of physician contacts as a base revealed 10.7 +/- 0.5% (95% CI) of the contacts with an analgesic prescription. The exposure to analgesics among males increased with age from 17% for those aged 15-34 years to 34% for those aged 75 years or more. Among women, exposure to analgesics increased from 17% (15-34 years) to 41% (75 years or more). Most of patients who received analgesic prescriptions were incidental users (one or two analgesic prescriptions per year). Only 4% of women and 3% of men were categorized as heavy users of analgesics (seven or more analgesic prescriptions per year). The proportion of heavy users increased with age and was highest in the oldest age-group (75 years or more). In order to make informed policy judgements about drug use in society, we need routine sales statistics and patient-specific drug-use data such as those presented in this paper.
OBJECTIVE: To compare subtotal abdominal hysterectomy (SH) and total abdominal hysterectomy (TH) regarding influence on postoperative psychological wellbeing and surgical outcome measurements. DESIGN: A prospective, open, randomised multicentre trial. SETTING: Seven hospitals and one private clinic in the south-east of Sweden. POPULATION: Two-hundred women scheduled for abdominal hysterectomy for benign conditions were enrolled in the study; 179 women completed the study (94 SH and 85 TH). METHODS: Four different psychometric tests were used to measure general wellbeing, depression and anxiety preoperatively, and at 6 and 12 months postoperatively. Statistical analysis of variance and covariance were used. MAIN OUTCOME MEASURES: Effects of operating method on psychological wellbeing postoperatively. Analysis of demographic, clinical and surgical data, including peri- and postoperative complications and complaints at follow up. RESULTS: No significant differences were observed between the two groups in any of the psychometric tests. Both surgical methods were associated with a significantly higher degree of psychological wellbeing at 6 and 12 months postoperatively, compared with preoperatively. No significant differences were found in the clinical measures including complications. A substantial number of women experienced persistent cyclic vaginal bleedings after SH. Neither minor or major postoperative complications, nor serum concentration of sex hormones, were associated with general psychological wellbeing 12 months after the operation. CONCLUSIONS: General psychological wellbeing is equally improved after both SH and TH within 12 months of the operation, and does not seem to be associated with the occurrence of peroperative complications or serum concentration of sex hormones.
Thirty-one adult patients with asthma caused by house-dust mites (HDM) were included in this placebo-controlled, double-blind study to evaluate the efficacy and safety of specific immunotherapy (SIT) with biologically standardized extracts of HDM. The specific diagnosis was confirmed by skin prick tests, specific IgE, and bronchial provocation tests with HDM allergens. The patients were randomized to receive active treatment with extracts of either Dermatophagoides pteronyssinus (Dpt) or D. farinae (Dfa) (Alutard SQ, ALK, Denmark) or placebo injections. Twenty-three patients completed the study. After 1 year of treatment, we found a clinically important and significant reduction in both asthma medicine consumption (inhaled steroids 38% and beta 2-agonists 46%) and symptom score (57%) in the actively treated group, but not the placebo group. These findings were confirmed by a significant decrease in skin and bronchial sensitivity to HDM in the active group. Additionally, there was a significant difference in the patients' scores for effect in favor of the actively treated group. Total IgE and specific IgE to HDM showed no significant changes before and after treatment for either group. Spirometric lung-function measurements showed a significant increase in forced expiratory volume in 1 s (FEV1) from 85% before to 89% of predicted values after treatment for the actively treated group. Peak-flow measurements at home showed no significant changes during the study. It is concluded that allergen SIT is an effective treatment in adult patients suffering from asthma due to HDM.