@article{3045091,
    title = "SEASONAL-VARIATION IN THE INCIDENCE OF RUPTURED ABDOMINAL
AORTIC-ANEURYSM",
    author = "LIAPIS, C and SECHAS, M and ILIOPOULOS, D and DOUSAITOY, B and and VERIKOPKOS, C and PATAPIS, P and ZOGRAFOS, G and KOLYVA, B and SKALKEAS, and GR",
    journal = "European Journal of Vascular and Endovascular Surgery",
    year = "1992",
    volume = "6",
    number = "4",
    pages = "416-418",
    publisher = "W B SAUNDERS CO LTD",
    issn = "1078-5884, 1532-2165",
    doi = "10.1016/S0950-821X(05)80290-7",
    keywords = "ABDOMINAL AORTIC ANEURYSM; DESCRIPTIVE EPIDEMIOLOGY; SEASONAL VARIATION;
RUPTURE OF ABDOMINAL ANEURYSM",
    abstract = "This retrospective study was performed in order to correlate the season
with the risk of rupture of an abdominal aortic aneurysm (AAA). From
December 1968 to December 1990, 224 patients, 203 males (90.63%) and 21
females (9.37%), mean age 71 years, underwent surgery either urgently
because of rupture or expansion (group A, 66 patients, 22.46%) or
electively (group B, 158 patients, 70.53%) for AAA. Of the 66 patients
in group A, 61 were male (92.4%) and five female (7.55%) with a mean
age of 73 years. Of the 158 patients in group B, 142 were male (89.8%)
and 16 female (10.1%). The frequency distribution of electively
admitted and operated cases of AAA was shown to be similar during all
seasons but the admissions of ruptured AAA were shown by non-parametric
statistical analysis to increase during the autumn (p < 0.05) with
43.9% of the cases being admitted during September, October and
November. The male to female ratio and the ratio of the number of
aneurysms ruptured to the total number of aneurysms did not change
significantly. The explanation of this phenomenon is obscure and needs
further epidemiological investigation to assess the seasonal variability
or various parameters such as hypertension."
}