Alderson M, Loy R M
Br J Dis Chest. 1977 Jul;71(3):198-202. doi: 10.1016/0007-0971(77)90110-3.
Over a 20-year period 765 men and 1127 women with asthma were followed up; 272 men and 282 women died compared with expected deaths of 165 men and 185 women. As anticipated there was an appreciable number of deaths attributed to asthma but an even higher absolute excess of deaths attributed to bronchitis when compared with the expected numbers. The relative excess from asthma and bronchitis was highest in the younger subjects. Mortality from all other causes was lower than expected.
在20年的时间里，对765名男性和1127名女性哮喘患者进行了随访；272名男性和282名女性死亡，而预期死亡人数分别为165名男性和185名女性。正如预期的那样，有相当数量的死亡归因于哮喘，但与预期数字相比，归因于支气管炎的死亡绝对超额数甚至更高。哮喘和支气管炎导致的相对超额死亡率在较年轻的受试者中最高。所有其他原因导致的死亡率低于预期。
