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Table 2 The Health and Activity Limitation Index (HALex)

From: Assessment of the health of Americans: the average health-related quality of life and its inequality across individuals and groups

   Perceived health status  
   Excellent Very good Good Fair Poor Dead
Activity limitation Single attribute score 1.00 0.85 0.70 0.30 0.00  
Not limited 1.00 1.00 0.92 0.84 0.63 0.47  
Limited in performing other activities 0.75 0.87 0.79 0.72 0.52 0.38  
Limited in performing major acitivities 0.65 0.81 0.74 0.67 0.48 0.34  
Unable to perform major activity 0.40 0.68 0.62 0.55 0.38 0.25  
Limited in instrumental activities of daily living (IADL) 0.20 0.57 0.51 0.45 0.29 0.17  
Limited in activities of daily living (ADL) 0.00 0.47 0.41 0.36 0.21 0.10  
Dead        0.00
  1. Source: Erickson, Wilson, Shannon (1995)