According to a study published in the November issue of the Archives of Otolaryngology - Head & Neck Surgery
, one of the JAMA/Archives
journals, among individuals with head and neck cancer
, continued tobacco use as well as pain
and poor overall quality of life seem to be linked to worse outcomes and increased mortality rate two years after being diagnosed.
The investigators explain:
"A conditional survival rate is the probability of surviving after having already lived for a certain length of time. This concept is important in the care of patients with head and neck cancer because it underlies the intuition of head and neck oncologists that mortality and recurrence rates are lower for patients further out from diagnoses."
Trisha L. Thompson, B.S., and colleagues from the University of Iowa Hospital and Clinics, Iowa City, carried out an observational investigation of 276 individuals who survived two years following upper aerodigestive carcinoma diagnosis between September 2001 and September 2008.
The team obtained data using short-term queries as well as standard surveys. 59.9% of the 276 patients included in the examination previously smoked tobacco, while 11.4% currently smoked, two years after being diagnosed. Furthermore, 86% of survivors were consuming a full diet two years after diagnosis and 80.5% reported being pain free.
For all participants the 5-year traditional observed survival rate was 61.1% in comparison with the conditional rate of 90.8% for individuals who survived two years. In addition, for all participants the five-year traditional disease-specific rate was 69.8% in comparison with the conditional rate of 94.8% for individuals who survived two years.
Advanced stage of the disease as well as older age were linked to worse survival, even if death was a result of the cancer from all causes. Individuals were more likely to die from all causes if they experienced pain o...