References

1. Orpana H, Ross N, Feeny D, et al. The natural history of health-related quality of life: a 10-year cohort study. Health Reports 2009; 20(1): 29-35.

2. Raudenbush SW, Bryk AS. Hierarchical Linear Models: Applications and Data Analysis Methods. Second Editon. Thousand Oaks, California: Sage Publications, 2002: 266-7.

3. Singer JD, Willett JB. Applied Longitudinal Data Analysis: Modelling Change and Event Occurrence. Toronto: Oxford University Press, 2003.

4. Feeny D, Furlong W, Torrance GW, et al. Multi-attribute and single-attribute utility functions for the Health Utilities Index Mark 3 System. Medical Care 2002; 40(2): 113-28.

5. Eng K, Feeny D. Comparing the health of low income and less well educated groups in the United States and Canada. Population Health Metrics 2007;5(10): 103.

6. van Doorslaer E, Jones AM. Inequalities in self-reported health: Validation of a new approach to measurement. Journal of Health Economics 2003; 22: 61-87.

7. KleinbaumD, Kupper L, Muller K, Nizam A. Applied Regression Analysis and Other Multivariable Methods. Third edition.Toronto: Duxbury Press, 1997: 252.

8. Hertley A, Ho KF, McConkey C, Geh JI. Pathological complete response following pre-operative chemoradiotherapy in rectal cancer: analysis of phase II/III trials. The British Journal of Radiology 2005: 78: 934-8.

9. Swain L, Catlin G, Beaudet M. Sample design of the National Population Health Survey: its longitudinal nature. Health Reports 1999; 10(4): 69-82.

10. Statistics Canada. National Population Health Survey Household Component: Cycles 1 to 7 (1994/1995 to 2006/2007) Longitudinal Documentation. Ottawa: Statistics Canada, 2007.

11. Bickel PJ, Doksun KA. MathematicalStatistics: Basic Ideas and Selected Topics. Oakland, California: Holden-Day, 1977: 388. 

12. Johnson RA, Bhattacharyya GK. Statistics, Principles and Methods. Toronto: John Wiley & Sons Inc., 1992.

13. Manning WG, Mullahy J. Estimating log models: Transform or not to transform? Journal of Health Economics 2001: 20 (4): 461-94.

14. Neter J, Wasserman W, Kutner MH. Applied Linear Statistical Models. Second Edition. Homewood, Illinois: Richard P. Irwin, Inc., 1985: 141.

15. Little RJA, Rubin DB. Statistical Analysis with Missing Data. Second Edition. Hoboken, New Jersey: Wiley, 2002.

16. Jehle GA, Reny PJ. Advanced Microeconomic Theory. Reading, Massachusetts: Addison-Wesley, 1998.