Skip to main content

Advertisement

Table 1 Characteristics of study subjects by period of observation

From: A self-controlled case series to assess the effectiveness of beta blockers for heart failure in reducing hospitalisations in the elderly

Exposure Status Number of Subjects Follow-up Years* Duration of exposure* Age at first hospitalisation* Age at first exposure*
1 Year observation period
Exposed 645 0.5(0.3,0.7) 0.3(0.1,0.6) 81(79,84) 81(78,84)
Unexposed 2805 0.5(0.3,0.8)   82(79,86)  
4 Year observation period
Exposed 3276 2.0(1.1,3.0) 0.8(0.2,1.8) 83(80,86) 81(78,84)
Unexposed 9406 1.7(1.0,3.0)   83(80,87)  
  1. *Median (q1, q3)