Trends in mortality risks among 94,328 patients surviving 30days after a first isolated coronary artery bypass graft procedure from 1987 to 2006: A population-based study.

BACKGROUND: Updated knowledge about survival after coronary artery bypass graft (CABG) surgery is needed. We examined 20-year trends in 4-year survival after a first isolated CABG procedure, compared with that of the general population. METHODS: We identified 94,328 patients surviving 30days after a first isolated CABG 1987-2006 from the Swedish Inpatient Register. RESULTS: Crude annual mortality rates remained stable at approximately 1% in patients aged 18-54years and at approximately 2% in those aged ≥55years. After adjustment for comorbidities, 4-year survival in men aged 18-54 and ≥55years improved by 37% (HR: 0.63, 95% CI, 0.46-0.88) and 31% (HR: 0.69, 95% CI, 0.63-0.76), respectively, (1987-1991 vs. 2002-2006). The corresponding estimate for women aged ≥55years was 38% (HR: 0.62, 95% CI, 0.52-0.75), with no significant change in survival in women aged <55years (HR: 1.02, 95% CI, 0.52-2.03). Men and women aged <55years had higher mortality than the general population, with standardized mortality ratios (SMR) of 1.76 (95% CI, 1.35-2.22) in men and 4.49 (95% CI, 2.74-6.68) in women during the last period (2002-2006). In contrast, patients aged ≥55years had better survival with a SMR of 0.74 (95% CI, 0.70-0.78) in men and 0.82 (95% CI, 0.74-0.91) in women during 2002-2006. CONCLUSION: During 1987-2006, there was a significant improvement in survival after CABG for all categories, except in women aged <55years. Men and women aged ≥55years who survived the first 30days after CABG had a lower mortality risk than the general population.

Sex-specific trends in 4-year survival in 37 276 men and women with acute myocardial infarction before the age of 55 years in Sweden, 1987-2006: a register-based cohort study.

OBJECTIVE: To examine sex-specific trends in 4-year mortality among young patients with first acute myocardial infarction (AMI), 1987-2006. DESIGN: Prospective cohort study. SETTING: Sweden. PARTICIPANTS: We identified 37 276 cases (19.4% women; age, 25-54 years) from the Swedish Inpatient Register, 1987-2006, who had survived 28 days after an AMI. OUTCOME MEASURES: 4-year mortality from all causes and standard mortality ratio (SMR). RESULTS: From the first to last 5-year period, the absolute excess risk decreased from 1.38 to 0.50 and 1.53 to 0.59 per 100 person-years among men aged 25-44 and 45-54 years, respectively. Corresponding figures for women were a decrease from 2.26 to 1.17 and from 1.93 to 1.45 per 100 person-years, respectively. Trends for women were non-linear, decreasing to the same extent as those for men until the third period, then increasing. For the last 5-year period, the standardised mortality ratio for young survivors of AMI compared with the general population was 4.34 (95% CI 3.04 to 5.87) and 2.43 (95% CI 2.12 to 2.76) for men aged 25-44 and 45-54 years, respectively, and 13.53 (95% CI 8.36 to 19.93) and 6.42 (95% CI 5.24 to 7.73) for women, respectively. Deaths not associated with cardiovascular causes increased from 21.5% to 44.6% in men and 41.5% to 65.9% in women. CONCLUSIONS: Young male survivors of AMI have low absolute long-term mortality rates, but these rates remain twofold to fourfold that of the general population. After favourable development until 2001, women now have higher absolute mortality than men and a 6-fold to 14-fold risk of death compared with women in the general population.

Perceived stress and incidence of Type 2 diabetes: a 35-year follow-up study of middle-aged Swedish men.

AIM: To explore incident cases of diagnosed diabetes over 35 years of follow-up in relation to self-perceived stress at baseline. METHODS: This was a population-based random sample of 7251 men derived from the Primary Prevention Trial Study, aged 47-56 years at baseline and without prior history of diabetes, coronary heart disease and stroke. Incident diabetes was identified from hospital discharge and death registries as principal or secondary diagnosis. Cox proportional hazards regression was used to evaluate the potential association between stress and diabetes. RESULTS: During a 35-year follow-up, a total of 899 men were identified with diabetes. The crude incidence was 5.2 per 1000 persons-years. At baseline, 15.5% men reported permanent stress related to conditions at work or home. After adjusting for age and competing risk of death, the estimated 35-year conditional probability of diabetes in men with permanent stress was 42.6%, compared with 31.0% for those with periodic stress and 31.2% with no stress. In age-adjusted Cox regression analysis, men with permanent stress had a higher risk of diabetes [hazard ratio 1.52 (95% CI 1.26-1.82)] compared with men with no (referent) or periodic stress [hazard ratio 1.09 (95% CI 0.94-1.27)]. The association between stress and diabetes was slightly attenuated but remained significant after adjustment for age, socio-economic status, physical inactivity, BMI, systolic blood pressure and use of anti-hypertensive medication [hazard ratio 1.45 (95% CI 1.20-1.75)]. When examining principal diagnosis of diabetes cases separately from secondary diagnoses cases, the excess risk of diabetes associated with permanent stress remained significant both in age (only) and multivariable adjusted models. CONCLUSION: Self-perceived permanent stress is an important long-term predictor of diagnosed diabetes, independently of socio-economic status, BMI and other conventional Type 2 diabetes risk factors.