1. Late outcomes of open heart surgery in patients 70 years or older
Jamal H Khan, MD, Sandra Magnetti, DrPH, Elaine Davis, Jianliang Zhang, PhD 
The Annals of Thoracic Surgery 
Volume 69, Issue 1, Pages (January 2000)
DOI: /S (99)

2. Fig 1
The Kaplan-Meier actuarial probability of survival for the 379 patients who survived the hospitalization after cardiac surgery was compared with the age- and gender-matched state population from the West Virginia Life Table 1989 to Goodness of fit test, Pearson χ2 = NS).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Kaplan-Meier survival curves indicate decreased survival with increasing number of comorbidities (log-rank test p < 0.001).
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3 Survival time of patients with preexisting comorbidities.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

5. Fig 4
Quality of Life (SF-36) mean scores of surgery patients compared with norms for SF-36 scales in the general US population ≥70 years of age. ∗∗p value significant at level.
The Annals of Thoracic Surgery  , DOI: ( /S (99) )