Male gender was associated with a higher incidence of NSTEMI compared to females (RR 2.36; 95% CI 2.23-2.49; P<0.0001), and incidence increased by 61% per five-year increase in age.
Observational (n=48,584)
Yes
Do age and gender affect the risk and incidence of NSTEMI in adults aged ≥30 years?
Men have a significantly higher risk for NSTEMI compared with women, especially in young adulthood, and the incidence of NSTEMI increases substantially with age.
Relative Risk: 2.36 (95% CI 2.23–2.49)
Absolute Event Rate: 28.7% vs 15%
p-value: p=<0.0001
BACKGROUND: Age and gender associated risks for non-ST-elevation myocardial infarction (NSTEMI) at the population level are largely uncharacterized. DESIGN: Nationwide, population (26,724,165 person-years) based eight-year registry-study in Finland. METHODS: Gender- and age-associated frequency and incidence of NSTEMI were studied using a nationwide, population based registry of hospital admissions in patients aged ≥30 years during 2001-2008. Patients with NSTEMI as primary (88%), secondary (10%) or tertiary (2%) discharge diagnosis were included. Data was collected nationwide from all 22 hospitals with a coronary angiolaboratory. RESULTS: The study period included 48,584 NSTEMI admissions of which 55.3% (95% confidence interval (CI) 54.6-56.0%) were of men and 44.7% (CI 44.1-45.3%) were of women, with age-adjusted relative risk of 1.86 (CI 1.60-2.16, p < 0.0001) for male gender. Female patients were significantly older than males (77.8 SD 10.2 vs. 70.2 SD 11.9 years, p < 0.0001). Standardized incidence rate of NSTEMI was 20.6 (CI 20.4-20.8)/10,000 person-years overall, 28.7 (CI 28.3-29.0)/10,000 in men and 15.0 (CI 14.7-15.2)/10,000 in women. Men had a 2.36-fold (CI 2.23-2.49; p < 0.0001) age-adjusted relative risk for NSTEMI compared with women, with highest risk difference in population under 40 years of age (relative risk 4.48; CI 3.10-6.48, p < 0.0001). Incidence increased with age by an estimated gender-adjusted increase rate of 61% (CI 59-62%; p < 0.0001) per five-year increase in age. CONCLUSIONS: Men have a 2.4-fold overall risk for NSTEMI compared with women, with highest relative risk in young adults. Incidence rate of non-ST-elevation myocardial infarction increases by an estimated 61% per five-year increase in age.
Kytö et al. (Mon,) conducted a observational in non-ST-elevation myocardial infarction (NSTEMI) (n=48,584). Male gender vs. Female gender was evaluated on Incidence of NSTEMI (per 10,000 person-years) (RR 2.36, 95% CI 2.23-2.49, p=<0.0001). Male gender was associated with a higher incidence of NSTEMI compared to females (RR 2.36; 95% CI 2.23-2.49; P<0.0001), and incidence increased by 61% per five-year increase in age.