TY - JOUR
T1 - Aspirin use after diagnosis improves survival in older adults with colon cancer
T2 - A retrospective cohort study
AU - Reimers, Marlies S.
AU - Bastiaannet, Esther
AU - Van Herk-Sukel, Myrthe P.P.
AU - Lemmens, Valery E.P.
AU - Van Den Broek, Colette B.M.
AU - Van De Velde, Cornelis J.H.
AU - De Craen, Anton J.M.
AU - Liefers, Gerrit Jan
PY - 2012/12
Y1 - 2012/12
N2 - Objectives To assess survival in relation to aspirin use after diagnosis in older adults with colon cancer. Design Subgroup analysis of a previously published cohort and retrospective study. Setting Individuals registered in the Eindhoven Cancer Registry (ECR) between 1998 and 2007, linked to prescriptions of low-dose aspirin (80 mg) registered in a community pharmacy database. Participants Five hundred thirty-six individuals aged 70 and older diagnosed with colon cancer with or without aspirin use after diagnosis. Measurements Survival was analyzed with user status as a time-dependent covariate. Multivariate Poisson regression survival models were used to study the effect of aspirin on overall survival. Results One hundred seven participants (20.0%) started aspirin after being diagnosed with colon cancer; 429 (80.0%) were not prescribed aspirin. Three hundred thirty-nine participants (63.2%) had died by the end of follow-up. Aspirin use after diagnosis was associated with longer overall survival (rate ratio (RR) = 0.51, 95% confidence interval (CI) = 0.38-0.70, P < .001). Multivariate proportional hazards regression analysis revealed that aspirin use was associated with longer overall survival (adjusted RR = 0.59, 95% CI = 0.44-0.81, P = .001). Conclusion Aspirin use after the diagnosis of colon cancer in older adults was associated with longer survival. Low-dose aspirin could be used as an effective adjuvant therapy in older adults with colon cancer.
AB - Objectives To assess survival in relation to aspirin use after diagnosis in older adults with colon cancer. Design Subgroup analysis of a previously published cohort and retrospective study. Setting Individuals registered in the Eindhoven Cancer Registry (ECR) between 1998 and 2007, linked to prescriptions of low-dose aspirin (80 mg) registered in a community pharmacy database. Participants Five hundred thirty-six individuals aged 70 and older diagnosed with colon cancer with or without aspirin use after diagnosis. Measurements Survival was analyzed with user status as a time-dependent covariate. Multivariate Poisson regression survival models were used to study the effect of aspirin on overall survival. Results One hundred seven participants (20.0%) started aspirin after being diagnosed with colon cancer; 429 (80.0%) were not prescribed aspirin. Three hundred thirty-nine participants (63.2%) had died by the end of follow-up. Aspirin use after diagnosis was associated with longer overall survival (rate ratio (RR) = 0.51, 95% confidence interval (CI) = 0.38-0.70, P < .001). Multivariate proportional hazards regression analysis revealed that aspirin use was associated with longer overall survival (adjusted RR = 0.59, 95% CI = 0.44-0.81, P = .001). Conclusion Aspirin use after the diagnosis of colon cancer in older adults was associated with longer survival. Low-dose aspirin could be used as an effective adjuvant therapy in older adults with colon cancer.
KW - aspirin
KW - colon cancer
KW - elderly
KW - survival
UR - http://www.scopus.com/inward/record.url?scp=84871027434&partnerID=8YFLogxK
U2 - 10.1111/jgs.12033
DO - 10.1111/jgs.12033
M3 - Article
C2 - 23176157
AN - SCOPUS:84871027434
SN - 0002-8614
VL - 60
SP - 2232
EP - 2236
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
IS - 12
ER -