Farr CE. Delay in the treatment of cancer. Am J Med Sciences 1922; 64: 712–715.
Pack GT, Gallo JS. The culpability for delay in the treatment of cancer. Am J Cancer 1938; 33: 443–462.
King RA, Leach JE. Factors contributing to delay by patients in seeking medical care. Cancer 1950; 3: 571–579.
Robbins GF, Conte AJ, Leach JE, MacDonald M. Delay in diagnosis and treatment of cancer. JAMA 1950; 143: 346–348.
Gray DB, Ward GE. Delay in diagnosis of carcinoma of the stomach. An analysis of 104 cases. Am J Surg 1952; April: 524–526.
Mustard RA, Ibberson O. Carcinoma of the esophagus: A review of 381 cases admitted to Toronto General Hospital 1937–1953 inclusive. Ann Surg 1956; 144: 927–940.
Goldsen RK, Gerhardt PR, Handy VH. Some factors related to patient delay in seeking diagnosis for cancer symptoms. Cancer 1957; 10: 1–7.
Kutner B, Makover HB, Oppenheim A. Delay in the diagnosis and treatment of cancer: A critical analysis of the literature. J Chron Dis 1958; 7: 95–120.
Kutner B, Gordon G. Seeking care for cancer. J Health Human Behav 1961; 2: 171–178.
Barber KW, Gage RP, Priestley JT. Significance of duration of symptoms and size of lesion in the prognosis of gastric carcinoma. Surg Gynecol Obstetr 1961; 113: 673–676.
Whitted HH. Determinants of acceptance to education and utilization of services for cancer detection and care among low income groups. Medical Annals District Columbia 1962; 31: 6–11.
Rowe-Jones DC, Aylett SO. Delay in treatment in carcinoma of colon and rectum. Lancet 1965; 2: 973–976.
Blackwell B. The literature of delay in seeking medical care for chronic illnesses. Health Educ Monogr 1963; 16: 3–31.
Sweet R, Twaddle A. An exploration of delay in hospitalization. Inquiry 1969; 6: 35–41.
Battistella RM. Factors associated with delay in the initiation of physicians' care among late adulthood persons. Am J Public Health 1971; 61: 1348–1361.
Antonovsky A, Hartman H. Delay in the detection of cancer: A review of the literature. Health Educ Monogr 1974; 2: 98–128.
Porta M, Belloc J, Malats N. Estudios españoles sobre la demora diagnóstica y terapéutica en el cáncer. Un análysis crítico de su metodología y resultados. In: Porta M, Alvarez-Dardet C (eds), Revisiones en Salud Pública, 1. Barcelona: Masson, 1989: 197–226.
Hackett TP, Cassem NH, Raker JW. Patient delay in cancer. N Engl J Med 1973; 289: 14–20.
Greenwald HP, Becker SW, Nevitt MC. Delay and noncompliance in cancer detection. A behavioral perspective for health planners. Milbank Memorial Fund Quart 1978; 56: 212–230.
Gardner B. The relationship of delay in treatment to prognosis in human cancer. Progr Clin Cancer 1978; 7: 123–133.
Keddie N, Hargreaves A. Symptoms of carcinoma of the colon and rectum. The Lancet 1968; 2: 749–750.
Younghusband JD, Aluwihare APR. Carcinoma of the oesophagus: Factors influencing survival. Br J Surg 1970; 57: 422–430.
Lim BS, Dennis CR, Gardner B, Newman J. Analysis of survival versus patient and doctor delay of treatment in gastrointestinal cancer. Am J Surg 1974; 127: 210–214.
Irvin TT, Greaney MG. Duration of symptoms and prognosis of carcinoma of the colon and rectum. Surg Gynecol Obstetr 1977; 144: 883–886.
Holliday HW, Hardcastle JD. Delay in diagnosis and treatment of symptomatic colorectal cancer. The Lancet 1979; 1: 309–311.
Bassett ML, Bennett SA, Goulston KJ. Colorectal cancer. A study of 230 patients.Med J Aust 1979; 1: 589–592.
Pescatori M, Maria G, Beltrani B, Mattana C. Site, emergency, and duration of symptoms in the prognosis of colorectal cancer. Dis Col Rect 1982; 25: 33–40.
Robinson E, Mohilever J, Zidan J, Sapir D. Delay in diagnosis of cancer. Possible effects on the stage of disease and survival. Cancer 1984; 54: 1454–1460.
Robinson E, Mohilever J, Zidan J, Sapir D. Colorectal cancer: Incidence, delay in diagnosis and stage of disease. Eur J Cancer Clin Oncol 1986; 22: 157–161.
Akdas A, Kirkali Z, Remzi D. The role of delay in stage-III testicular tumors. Eur Urol 1986; 12: 151–153.
Mikulin T, Hardcastle JD. Gastric carlcer-Delay in diagnosis and its causes. Eur J Cancer Clin Oncol 1987; 23: 1683–1690.
Saunders LD. Differences in the timeliness of diagnosis, breast and cervical cancer, San Francisco 1974–85. Am J Public Health 1989; 79: 69–70.
Kulkarni PR, Vernon SW, Jackson GL, et al. Stage at diagnosis of breast cancer. Comparison in a FeeFor-Service and Health Maintenance Organization Practice. Med Care 1989; 27: 608–622.
Zilling TL, Walther BS, Ahren B. Delay in diagnosis of pastric cancer: A prospective study evaluating doctors' and patients' delay and its influence on five year survival. Anticancer Res 1990; 10: 411–426.
Kaufman S, Grabau JC, Lore JM. Symptomatology in head and neck cancer: A quantitative review of 385 cases. Am J Public Health 1980: 70: 520–522.
Elwood JM, Moorehead WP. Delay in diagnosis and long-term survival in breast cancer. Br Med J 1980; 280:1291–1294.
Bosl GJ, Vogelzang NJ, Goldman A, et al. Impact of delay in diagnosis on clinical stage of testicular cancer. Lancet 1981; 2: 970–972.
Nilsson E, Bolin S, Sjödahl R. Carcinoma of the colon and rectum. Delay in diagnosis. Acta Chir Scand 1982; 148: 617–622.
Feldman JG, Saunders M, Carter AC, Gardner B. The effects of patient delay and symptoms other than a lump on survival in breast cancer. Cancer 1983; 51: 1226–1229.
Bosch FX, Español J, Campillo M, et al. Análisis general del Registro de Tumores del Hospital de Sta. Caterina de Girona. Descripción de la serie y estudio del retardo diagnóstico y terapéutico. Rev Esp Oncol 1983; 30: 209–223.
Fowler WC, Freeman AC, Hulka BS, et al. Delays in cervical cancer treatment: an assessment of patient and provider characteristics. In: Advances in cancer control: Epidemiology and research. New York: Alan R. Liss, 1984: 265–274.
Smith EM, Anderson B. The effects of symptoms and delay in seeking diagnosis on stage of disease at diagnosis among women with cancers of the ovary. Cancer 1985; 56: 2727–2732.
GIVIO (Interdisciplinary Group for Cancer Care Evaluation). Reducing diagnostic delay in breast cancer. Possible therapeutic implications. Cancer 1986; 58: 1756–1761.
Marshall JR, Funch DP. Gender and illness behavior among colorectal cancer patients. Women Health 1986; 11: 67–82.
Weissman JS, Stern R, Fielding SL, Epstein AM. Delayed access to health care: Risk factors, reasons, and consequences. Ann Intern Med 1991; 114: 325–331.
Vineis P, Fornero G, Magnino A, et al. Diagnostic delay, clinical stage, and social class: a hospital based study. J Epidemiol Community Health 1993; 47: 229–231.
Porta M, Gallén M, Malats N, Planas J. Influence of ‘diagnostic delay’ upon cancer survival: An analysis of five tumour sites. J Epidemiol Community Health 1991; 45: 225–230.
Maguire A, Porta M, Malats N, et al. Cancer survival and the duration of symptoms. An analysis of possible forms of the risk function. Eur J Cancer 1994; 30A: 785–792.
Cobb B, Clark RL, McGuire C, Howe CD. Patient-responsible delay of treatment in cancer. Cancer 1954; 7: 920–926.
Cassileth BR, Clark WH, Heiberger RM, et al. Relationship between patients' early recognition of melanoma and depth of invasion. Cancer 1982; 49: 198–200.
MacArthur C, Smith A. The symptom presentation of breast cancer: Is pain a symptom? Community Med 1983; 5: 220–3.
MacArthur C, Smith A. Factors associated with speed of diagnosis, referral, and treatment in colorectal cancer. J Epidemiol Community Health 1984; 38: 122–126.
Merletti F, Faggiano F, Boffetta P, et al. Topographic classification, clinical characteristics, and diagnostic delay of cancer of the larynx/hypopharynx in Torino, Italy. Cancer 1990; 66: 1711–1716.
Funch DP. The role of patient delay in the evaluation of breast self-examination. J Psychosoc Oncol 1984; 2: 31–39.
Funch DP. Diagnostic delay in symptomatic colorectal cancer. Cancer 1985; 56: 2120–2124.
Retchin SM, Brown B. Management of colorectal cancer in Medicare Health Maintenance Organizations. J Gen Intern Med 1990; 5: 110–114.
Feigl P, Glaeflke G, Ford L, et al. Studying patterns of cancer care: How useful is the medical record?. Am J Public Health 1988; 78: 526–533.
Funch DP. Predictors and consequences of symptom reporting behaviors in colorectal cancer patients. Med Care 1988; 26: 1000–1008.
Steptoe A, Sutcliffe I, Allen B, Coombes C. Satisfaction with communication, medical knowledge, and coping style in patients with metastatic cancer. Soc Sci Med 1991; 32: 627–632.
Malats N, Belloc J, Gallén M, Porta M. Disagreement between hospital medical records and a structured patient interview on the type and date of the first symptom in cancers of the digestive tract. Rev Epidemiol Santé Publique 1995; 43: 533–540.
Polissar L, Sim D, Francis A. Survival of colorectal cancer patients in relation to duration of symptoms and other prognostic factors. Dis Col Rect 1981 24: 364–369.
MacDonald I, Kotin P. Biological predeterminism in gastric carcinoma and the limiting factor of curability. Surg Gynecol Obstetr 1954; 98: 148–152.
Becker MH, Maiman LA. Sociobehavioral determinants of compliance with health and medical care recommendations. Med Care 1975; 13: 10–24.
Twaddle AC. Sickness and the sickness career: Some implications. In: Eisenberg L, Kleinman A (eds), The relevance of social science for medicine. Dordrecht: D. Reidel, 1981: 111–133.
MacArthur C, Pendleton LL, Smith A. Treatment delay in patients with bladder tumours. J Epidemiol Community Health 1985; 39: 63–66.
Berman SH, Wandersman A. Measuring knowledge of cancer. Soc Sci Med 1991; 32: 1245–1255.
Belloc J, Porta M, Malats N, et al. El síntoma inicial atribuible al cáncer en los tumours del tubo digestivo. Un análisis de la concordancia entre el paciente y el médico. Med Clin (Barc) 1994; 103: 401–407.
Porta M, Gallén M, Belloc J, Malats N. Predictors of the interval between onset of symptoms and first medical visit in patients with digestive tract cancer. Int J Oncol 1996; 8: 941–949.
SAS Institute Inc. SAS/STAT guide for personal computers. Version 6 edition. Cary, NC: SAS Institute Inc., 1987.
Kleinbaum DG, Kupper LL, Morgenstern H. Epidemiologic research. Principles and quantitative methods. Belmont, CA: Lifetime Learning Publications, 1982: 320–376.
Sudman S, Bradburn NM. Asking questions. A practical guide to questionnare design. San Francisco: Jossey-Bass, 1987.
Loftus EF, Smith KD, Klinger MR, Fiedler J. Memory and mismemory for health events. In: Tanur JM (ed), Questions about questions: Inquiries into the cognitive bases of surveys. New York: Rissel Sage Foundation, 1992: 102–137.
Molina MC, Porta M, Malats N, et al. Percepción del inicio y la evolución de la sintomatología en pacientes hospitalizados con cáncer del tubo digestivo. Neoplasia 1994; 11: 119–125.
Feinstein AR, Pritchett JA, Schimpff CR. The epidemiology of cancer therapy. IV. The extraction of data from medical records. Arch Intern Med 1969; 123:571–590.
McKenna MT, Speers M, Mallin K, Warnecke R. Agreement between patient self-reports and medical records for pap smear histories. Am J Prev Med 1992; 8: 287–291.
Bush TL, Miller SR, Golden AL, Hale WE. Selfreport and medical record report agreement of selected medical conditions in the elderly. Am J Public Health 1989; 79: 1554–1556.
Whitman S, Lacey L, Ansell D, et al. Do chart reviews and interviews provide the same information about breast and cervical cancer screening? Int J Epidemiol 1993; 22: 393–397.
Mechanic D. Social psychologic factors affecting the presentation of bodily complaints. N Engl J Med 1972; 286: 1132–1139.
Becker MH, Maiman LA. Models of health-related behavior. In: Mechanic D (ed), Handbook of health, health care and the health professions. New York: The Free Press, 1982: 539–568.
Boyle P, Veronesi U, Tubiana M, et al. European School of Oncology Advisory Report to the European Commission for the ‘Europe Against Cancer Programme’ European Code Against Cancer. Eur J Cancer 1995; 31A: 1395–1405.
Calman K (Chairman). A policy framework for commisioning cancer services. A report by the Expert Advisory Group on cancer to the Chief Medical Officers of England and Wales. London: Department of Health, 1995: 22.