Capitão L M, Menezes J D, Gouveia-Oliveira A
Hospital de São Luís, Departamento de Biomatemática, Faculdade de Medicina de Lisboa.
Acta Med Port. 1995 Sep;8(9):485-91.
The prevalence of chronic venous insufficiency (CVI) was investigated in 44,777 unselected primary care outpatient clinics in 17 of the 20 districts in Portugal, during 1993. The diagnosis of CVI was established clinically by 427 participating general practitioners. CVI was more prevalent in females, with a female to male ratio of 2.1:1. The disease affects all age groups, but in females its prevalence increases sharply between 15 and 20 years, while in males it begins to become important about 10 years later. The maximum age-specific prevalence is reached between 55 and 64 years in both sexes, when CVI is present in 58% of females and in 35% of males. Overall prevalence of CVI was calculated using the data from the population census of 1991, by the direct standardization method. The estimated prevalence of CVI in males is 17.8% and in females is 34.1%, corresponding to 812 thousand and 1,741 thousand cases in Portugal, respectively. In the population over 15 years old, the prevalence is 20.7% in males and 40.8% in females. These estimates have an error of +/- 2.5% with 95% confidence. The geographical distribution of the disease showed different patterns in males and in females. Prevalence decreases from coast to inland in males, and from south to north in females.
1993年，在葡萄牙20个区中的17个区的44777名未经挑选的初级保健门诊患者中，对慢性静脉功能不全（CVI）的患病率进行了调查。427名参与调查的全科医生通过临床诊断确定CVI。CVI在女性中更为普遍，男女比例为2.1:1。该疾病影响所有年龄组，但在女性中，其患病率在15至20岁之间急剧上升，而在男性中，大约10年后才开始变得显著。男女在55至64岁之间达到特定年龄的最高患病率，此时58%的女性和35%的男性患有CVI。使用1991年人口普查的数据，通过直接标准化方法计算CVI的总体患病率。估计葡萄牙男性CVI患病率为17.8%，女性为34.1%，分别对应81.2万例和174.1万例。在15岁以上人群中，男性患病率为20.7%，女性为40.8%。这些估计值在95%置信度下的误差为±2.5%。该疾病的地理分布在男性和女性中呈现出不同的模式。男性患病率从沿海向内陆降低，女性患病率从南向北降低。
