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1.
Med Oral Patol Oral Cir Bucal ; 26(6): e795-e801, 2021 Nov 01.
Article in English | MEDLINE | ID: mdl-34162818

ABSTRACT

BACKGROUND: Lack of knowledge and awareness of oral cancer seem to be the main causes of diagnostic delay. Online resources are often used by patients to obtain health/medical information. However, there are no reports on the quality and usefulness of oral cancer audio-visual resources in Spanish. The aims of this investigation were to disclose the type of information about oral cancer available, and whether it may be useful to shorten the patients' oral cancer appraisal time-interval. MATERIAL AND METHODS: Cross-sectional study undertaken at three video-sharing sites on October, 13th 2019. KEYWORDS: "Cáncer oral"; "cáncer de boca". The first 100 results in each viewing list were retrieved by three reviewers. Demographical data was recorded, and interaction indexes, viewing rates, comprehensiveness, and usefulness were calculated for each video. The presence of non-scientifically supported information was also assessed. A descriptive analysis was undertaken, and relationships between variables were explored using the Spearman correlation test. RESULTS: A total of 127 videos were selected. They were produced mainly by mass-media (46.5%; n=59) and their length ranged from 0.28 to 105.38 minutes (median 4.15 minutes; IQR: 2.34-9.67). The most viewed video (10,599,765 views; visualization rate 726,508.9) scored 0 both in usefulness and comprehensiveness. The most useful video gathered 44,119 views (visualization rate 2.033.13). A highly significant positive correlation (0.643; p<0.001) could be observed between usefulness and comprehensiveness of the videos, together with negative correlations between the visualization rate and usefulness (-0.186; p<0.05), and visualization rate and comprehensiveness (-0.183; p<0.05). CONCLUSIONS: Online audio-visual material about oral cancer in Spanish is incomplete, of limited usefulness, and often includes non-scientifically supported information. Most of these resources are produced by mass media and healthcare professionals, with minor contributions from educational and healthcare institutions. Visualization rates negatively correlated with the usefulness and comprehensiveness of the contents in these digital objects.


Subject(s)
Mouth Neoplasms , Social Media , Cross-Sectional Studies , Delayed Diagnosis , Humans , Mouth Neoplasms/diagnosis , Video Recording
2.
Med Oral Patol Oral Cir Bucal ; 26(4): e518-e525, 2021 Jul 01.
Article in English | MEDLINE | ID: mdl-34162825

ABSTRACT

BACKGROUND: An early diagnosis depends greatly on patient awareness. Thus, the aim of this study was to investigate general awareness of oral cancer and knowledge about its risk factors, signs and symptoms. MATERIAL AND METHODS: Cross-sectional population-based survey of randomly selected respondents conducted from March 1, 2015 to 30 June 2016. RESULTS: A total of 5,727 people entered the survey (response rate: 53%). When asked what cancers participants had heard about, 20.3% mentioned oral cancer. Regarding risk factors, tobacco was mentioned by 55.3% of the sample (n=3,169), followed by alcohol (12.5%; n=708), poor oral hygiene (10.8%; n=618), diet (6.5%; n=377), and genetics (4.5%; n=248). CONCLUSIONS: General population has low awareness of oral cancer with poor knowledge of risk factors and main alarm signs. In addition, individuals in the risk group scored lower values in the main variables analysed; even those highly educated showed insufficient awareness and knowledge of oral cancer. In these circumstances, there is clear need for educational interventions tailored to the target audience and aimed at increasing knowledge and awareness of oral cancer to promote primary prevention of oral cancer and minimising the time interval of patients with symptomatic oral cancer in their path to treatment.


Subject(s)
Mouth Neoplasms , Smoking , Cross-Sectional Studies , Health Knowledge, Attitudes, Practice , Humans , Mouth Neoplasms/diagnosis , Mouth Neoplasms/epidemiology , Risk Factors , Spain , Surveys and Questionnaires
3.
An Sist Sanit Navar ; 43(2): 217-223, 2020 Aug 31.
Article in Spanish | MEDLINE | ID: mdl-32814931

ABSTRACT

Oral pathologies, in addition to being highly prevalent, have a systemic impact that can be prevented by regularly eliminating the dental biofilm. This population-based, cross-sectional study analysed the oral hygiene habits of 3,289 adults through community surveys in the four provincial capitals of Galicia between March 2015 and June 2016. Sex, level of periodontal awareness, education, tobacco habit, frequency of visits to the dentist and level of oral hygiene were registered according to the use of oral hygiene products and the frequency of their use. Oral hygiene was limited to brushing their teeth once a day in 86% of those surveyed, while regular interdental hygiene was a minority practice. The variables associated with good habits were periodontal awareness, frequent visits to the dentist, being a woman and a high educational level. Oral self-care is insufficient, especially in interdental hygiene, which justifies the need for educational interventions in the community.


Subject(s)
Oral Hygiene , Toothbrushing , Adult , Cross-Sectional Studies , Female , Habits , Humans , Surveys and Questionnaires
4.
Med Oral Patol Oral Cir Bucal ; 25(4): e455-e460, 2020 Jul 01.
Article in English | MEDLINE | ID: mdl-32388529

ABSTRACT

BACKGROUND: Primary care physicians have been reported to be the first choice for patients with oral ulcerations. This study investigates the health-seeking behaviour of lay public in Galicia (North-western Spain) if experiencing a long-standing oral ulceration. MATERIAL AND METHODS: Cross-sectional population-based survey of randomly selected respondents conducted from March 1, 2015 to 30 June 2016. RESULTS: A total of 5,727 pedestrians entered the study (response rate: 53%), mostly in the 45-64 age group (30.2%; n=1,728), 47.7% of them (n=2,729) were males. Most participants (42.1%; n=2,411) reported to visit their dentist once a year and had secondary or compulsory education as their highest educational achievement (28.18%, n=1,614; 28%, n=1,600 respectively). When questioned what they would do if they had a wound/ulceration lasting longer than 3 weeks, most participants answered they would go to see their primary care physician (62.8%; n=3,597) and less than one quarter of the sample (23.8%; n=1,371) would seek consultation with their dentist. CONCLUSIONS: General Galician population would seek professional consultation about a long-standing oral ulceration, relying mostly on primary care physicians. Those neglecting these lesions are elderly, less-schooled people and unaware of oral cancer.


Subject(s)
Dentists , Aged , Cross-Sectional Studies , Humans , Male , Spain
5.
Int J Oral Maxillofac Surg ; 49(10): 1343-1350, 2020 Oct.
Article in English | MEDLINE | ID: mdl-32171621

ABSTRACT

Actinic cheilitis (AC) is a sun-induced premalignant lesion. AC is a clinical term housing a wide pathological spectrum ranging from hyperkeratosis to invasive squamous cell carcinoma. The aim of this systematic review was to examine the therapeutic efficacy of different approaches in clinical, histological, and cosmetic terms, and the malignization rate after treatment. A systematic search was undertaken in October 2016 and updated in April 2019 at MEDLINE (from 1966), Embase (from 1980), and Proceedings Web of Science (Conference Proceedings Citation Index-Science (CPCI-S) from 1990) databases. The search strategy was (("actinic" or "solar") AND ("cheilitis")) using both medical subject headings (MeSH) and freetext. A total of 392 potentially eligible reports were identified. After the selection procedure, 20 articles were included. It was concluded that surgical treatment is the first line of treatment for AC and has proved useful for the clinical and pathological control of the disorder. However, there was no evidence of effective treatment in preventing malignant transformations. Non-surgical procedures showed less consistent results, although drug therapy may improve the results obtained by other therapeutic approaches.


Subject(s)
Carcinoma, Squamous Cell , Cheilitis , Lip Neoplasms , Cell Transformation, Neoplastic , Cheilitis/drug therapy , Humans , Treatment Outcome
6.
Med Oral Patol Oral Cir Bucal ; 24(4): e452-e460, 2019 Jul 01.
Article in English | MEDLINE | ID: mdl-31246938

ABSTRACT

BACKGROUND: The aim of this systematic review was to summarise the clinical information available about oral mucosal peeling (OMP) and to explore its aetiopathogenic association with dentifrices and mouthwashes. MATERIAL AND METHODS: PICOS outline. Population, subjects diagnosed clinically and/or pathologically. Intervention, exposition to oral hygiene products. Comparisons, patients using products at different concentrations. Outcomes, clinicopathological outcomes (primary) and oral epithelial desquamation (secondary) after use. Study design, any. Exclusion criteria, reports on secondary or unpublished data, in vitro studies. Data were independently extracted by two reviewers. RESULTS: Fifteen reports were selected from 410 identified. Descriptive studies mainly showed low bias risk, experimental studies mostly an "unclear risk". Dentifrices or mouthwashes were linked to OMP, with an unknown origin in 5 subjects. Sodium lauryl-sulphate (SLS) was behind this disorder in 21 subjects, tartar-control dentifrices in 2, and flavouring agents in 1 case. Desquamation extension was linked to SLS concentration. Most cases were painless, leaving normal mucosa after desquamation. Tartar-control dentifrices caused ulcerations more frequently. CONCLUSIONS: OMP management should consider differential diagnosis with oral desquamative lesions, particularly desquamative gingivitis, with a guided clinical interview together with pathological confirmation while discouraging the use of the product responsible for OMP.


Subject(s)
Dental Plaque , Dentifrices , Humans , Mouth Mucosa , Mouthwashes , Sodium Dodecyl Sulfate
7.
Oral Dis ; 24(1-2): 124-127, 2018 Mar.
Article in English | MEDLINE | ID: mdl-29480613

ABSTRACT

OBJECTIVES: To investigate the level of oral cancer knowledge and awareness in a Spanish general population. SUBJECTS AND METHODS: A cross-sectional study using an anonymous questionnaire applied in the community to randomly selected laypersons. Sample size for the general population was determined by quota sampling, resulting in 1,041 individuals. RESULTS: A total of 1,707 pedestrians were approached (response: 61%). When the participants were asked about what cancers had they heard about (up to ten), oral cancer was mentioned in first place by 2% of the sample and by 22% in any order. When specifically asked about oral cancer, the percentage of interviewees who were familiar with it raised to 72%. Participants were also asked about the main signs or symptoms of oral cancer, and the most frequently (22%) mentioned as the first warning sign was a non-healing ulcer. Tobacco smoking generally was recognised as the most important (57%) risk factor for oral cancer. CONCLUSIONS: This pilot study revealed a low awareness of oral cancer, and a poor knowledge of its signs and symptoms and risk factors.


Subject(s)
Health Knowledge, Attitudes, Practice , Mouth Neoplasms/complications , Mouth Neoplasms/diagnosis , Adolescent , Adult , Aged , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Pilot Projects , Risk Factors , Smoking , Spain , Surveys and Questionnaires , Young Adult
8.
Clin Otolaryngol ; 43(1): 164-171, 2018 02.
Article in English | MEDLINE | ID: mdl-28627802

ABSTRACT

OBJECTIVES: To examine the relative length of the patient and primary care intervals in symptomatic oral cancer. DESIGN: Quantitative systematic review. SEARCH STRATEGY: Oral cancer OR oral squamous cell carcinoma OR oropharyngeal cancer AND time interval OR diagnostic delay. SETTING: Primary and secondary care. PARTICIPANTS: Oral and oropharyngeal cancer patients. MAIN OUTCOME MEASURES: We computed five measures (patient, primary care, diagnosis, total diagnosis and total treatment intervals). Most studies did not provide any dispersion measure. We then used the sample size of each study to compute a weighted average of the mean intervals. When the median was provided, we assumed normality of the distribution of the means and used the median as a proxy of the mean. RESULTS: A total of 1089 articles were identified, and 22 met the inclusion criteria, reporting on 2710 patients from Europe, USA, India, Australia, Japan, Argentina and Iran. The weighted average of patient interval was 80.3 days. Primary care interval was five times shorter: 15.8 days. The diagnostic interval was appreciably shorter (47.9 days) when compared with the patient interval during symptomatic period. CONCLUSIONS: Patient interval represents the major component of waiting times since the detection of the first signs/symptoms to the definitive diagnosis of oral cancer. Thus, strategies focused on high-risk patients should be prioritised. Interventions aimed at optimising the health systems should be implemented by monitoring and facilitating diagnostic and treatment pathways of patients with oral cancer.


Subject(s)
Appointments and Schedules , Delayed Diagnosis , Mouth Neoplasms , Primary Health Care/standards , Time-to-Treatment/trends , Combined Modality Therapy , Global Health , Humans , Morbidity/trends , Mouth Neoplasms/diagnosis , Mouth Neoplasms/epidemiology , Mouth Neoplasms/therapy , Time Factors
9.
Int J Oral Maxillofac Surg ; 46(1): 1-10, 2017 Jan.
Article in English | MEDLINE | ID: mdl-27751768

ABSTRACT

The aim of this study was to identify key points and time intervals in the patient pathway to the diagnosis of oral cancer, from the detection of a bodily change to the start of treatment. A systematic search of three databases was performed by two researchers independently. Articles reporting original data on patients with symptomatic primary oral or oropharyngeal squamous cell carcinoma that was pathologically confirmed were included. These articles had to include an outcome variable of 'diagnostic delay', 'time interval', or 'waiting time to diagnosis', or report time intervals from first symptom to treatment. Furthermore, the outcome variable had to have a clearly defined start point and end point, with the time measurement presented as a continuous or categorical variable. A total of 1175 reports were identified; 28 articles on oral cancer studies and 13 on oral and oropharyngeal cancer studies were finally included. These papers showed poor quality in terms of questionnaire validation, acknowledgement of biases influencing time-point measurements, and strategies for verification of patient self-reported data. They also showed great heterogeneity. The review findings allowed the definition of key points and time intervals within the Aarhus framework that may better suit the features of the diagnostic process of this neoplasm, particularly when assessing the impact of waiting time to diagnosis.


Subject(s)
Carcinoma, Squamous Cell/diagnosis , Early Detection of Cancer , Mouth Neoplasms/diagnosis , Carcinoma, Squamous Cell/therapy , Delayed Diagnosis , Humans , Mouth Neoplasms/therapy , Time Factors , Time-to-Treatment
10.
Semergen ; 43(2): 141-148, 2017 Mar.
Article in Spanish | MEDLINE | ID: mdl-27068254

ABSTRACT

About 85-94% of the Spanish adults older than 35 experience gum problems, and about 15-30% suffer from periodontitis, being severe in up to 5-11% of them. Unlike other inflammatory conditions, periodontal disease rarely causes discomfort, or limits life or causes functional limitations until its advanced stages, when clinical signs and symptoms arise (gingival recession, pathological teeth migration, or mobility). Lack of knowledge about the disease, together with the idea that tooth loss is linked to ageing, frequently results in a late diagnosis, requiring extensive treatments with a worse prognosis. At Primary Care level, there is series of drugs have been related to periodontal disease (anticonvulsants, immunosuppressive drugs, and calcium channel blockers) as secondary effects, which vary as regards their frequency and severity depending of the amount of accumulated plaque. Stress and depression have also been reported to alter the immune response and to increase the inflammatory response as well as periodontal susceptibility. Certain systemic conditions, such as diabetes mellitus, cardiovascular disorders, respiratory diseases, as well as low-weight pre-term birth, have also been linked to periodontitis.


Subject(s)
Gingival Recession/epidemiology , Periodontal Diseases/epidemiology , Periodontitis/epidemiology , Adult , Family Practice , Humans , Periodontal Diseases/diagnosis , Periodontal Diseases/etiology , Periodontitis/diagnosis , Periodontitis/etiology , Primary Health Care , Prognosis , Risk Factors , Severity of Illness Index , Spain
11.
Br J Oral Maxillofac Surg ; 55(4): 413-415, 2017 May.
Article in English | MEDLINE | ID: mdl-27986307

ABSTRACT

To identify the variables that influence the diameter of the artery in the lateral sinus wall, we studied 240 sinuses, focusing on sex, pattern of tooth loss, type of residual crest, thickness of the lateral wall, height and width of the ridge, and width of the sinus.


Subject(s)
Alveolar Process/blood supply , Alveolar Process/diagnostic imaging , Arteries/diagnostic imaging , Transverse Sinuses/diagnostic imaging , Aged , Cone-Beam Computed Tomography , Female , Humans , Male , Middle Aged , Retrospective Studies
12.
Med Oral Patol Oral Cir Bucal ; 21(6): e758-e765, 2016 Nov 01.
Article in English | MEDLINE | ID: mdl-27694790

ABSTRACT

BACKGROUND: In a variable proportion of maxillary sinuses alveolar antral artery is located close to the residual ridge, increasing the chances for haemorrhagic complications during sinus floor elevation procedures. MATERIAL AND METHODS: Retrospective observational study of CBCT explorations performed for implant-treatment planning. The upper first molar area was selected for this study. The relative uncertainty (standard deviation of the measurement divided by its mean and expressed as a percentage from 0% to 100%) was chosen for determining the observational errors. For modeling the chances of AAA detection, the generalized additive models (GAM) approach was chosen. RESULTS: A total of 240 maxillary sinuses were studied (46.25% males) whose median median age was 58 years old (IQR: 52-66). Univariate models showed that the chances for an AAA-alvelar crest distance ≤15mm increase in wider sinuses with lower, subsinusally edentulous crests. When distance is considered as a continuous variable, the best mutivariate model showed an explained deviance of 67% and included AAA diameter, distance AAA-sinus floor, sinus width, and shape, height and width of the residual ridge. Thinner AAAs are found closer to the crest (within the ≤15mm safe distance). CONCLUSIONS: Bearing in mind the inclusion criteria and the limitations of this investigation, it is concluded that there is a high proportion of maxillary sinuses where AAA describes a course close to the alveolar crest (≤15mm), which was classically considered a safe distance for SFE. This position is related to the presence of atrophic crests (depressed ridge form) and wide maxillary sinuses where the distance of the vessel to the floor of the sinus is small. This information may permit a better surgical planning of SFE procedures.


Subject(s)
Alveolar Process/surgery , Maxillary Sinus/surgery , Sinus Floor Augmentation , Aged , Arteries , Humans , Male , Maxilla , Middle Aged , Retrospective Studies
13.
Int J Oral Maxillofac Surg ; 44(11): 1405-10, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26215383

ABSTRACT

A systematic search of MEDLINE, Embase, and Proceedings Web of Science was undertaken to assess the prevalence of the posterior superior alveolar artery (PSAA) in the lateral sinus wall in sinus lift patients, as identified using computed tomography (CT)/cone beam computed tomography (CBCT). For inclusion, the article had to report PSAA detection in the bony wall using CT and/or CBCT in patients with subsinus edentulism. Studies on post-mortem findings, mixed samples (living and cadaveric), those presenting pooled results only, or studies performed for a sinus pathology were excluded. Heterogeneity was checked using an adapted version of the DerSimonian and Laird Q test, and quantified by calculating the proportion of the total variance due to between-study variance (Ri statistic). Eight hundred and eleven single papers were reviewed and filtered according to the inclusion/exclusion criteria. Ten studies were selected (1647 patients and 2740 maxillary sinuses (study unit)). The pooled prevalence of PSAA was 62.02 (95% confidence interval (CI) 46.33-77.71). CBCT studies detected PSAA more frequently (78.12, 95% CI 61.25-94.98) than CT studies (51.19, 95% CI 42.33-60.05). Conventional CT revealed thicker arteries than CBCT. It is concluded that PSAA detection is more frequent when CBCT explorations are used. Additional comparative studies controlling for potential confounding factors are needed to ascertain the actual diagnostic value of radiographic explorations for assessing the PSAA prior to sinus floor elevation procedures.


Subject(s)
Alveolar Process/blood supply , Cone-Beam Computed Tomography , Maxillary Artery/diagnostic imaging , Maxillary Sinus/diagnostic imaging , Sinus Floor Augmentation , Tomography, X-Ray Computed , Alveolar Process/anatomy & histology , Alveolar Process/diagnostic imaging , Humans , Maxillary Artery/anatomy & histology , Maxillary Sinus/anatomy & histology , Prevalence
14.
Br J Oral Maxillofac Surg ; 53(4): 393-5, 2015 Apr.
Article in English | MEDLINE | ID: mdl-25703184

ABSTRACT

Although information about cancer on the Internet can be beneficial to patients and physicians, to our knowledge, comprehension by patients has not been investigated. We used 3 search engines to select websites on oral cancer then assessed their readability using the Flesch-Kinkaid Reading Grade Level, Flesch Reading Ease Score, Gunning Fog Index, Coleman-Liau Index, Automated Readability Index, and the Simple Measure of Gobbledygook Index (SMOG). The mean scores for readability were within the range of "difficult to read" (FRES=36.04 (14.87)) with high educational requirements (FKRGL=11.44 (3.27)). This could hamper comprehension and is particularly worrying given the high percentage of people who have poor levels of literacy.


Subject(s)
Comprehension , Consumer Health Information , Internet , Mouth Neoplasms , Educational Status , Health Literacy , Humans , Reading , Search Engine
15.
Br Dent J ; 214(12): 606, 2013 Jun.
Article in English | MEDLINE | ID: mdl-23787831
16.
Article in Spanish | IBECS | ID: ibc-120176

ABSTRACT

Se revisan los criterios de referencia de pacientes con lesiones sospechosas de malignidad a servicios especializados y los criterios para llevar a cabo las biopsias orales con la finalidad de acortar los intervalos de tiempo hasta alcanzar el diagnóstico definitivo. También se describe la técnica de biopsia incisional y se discuten los conceptos básicos para la comprensión de los informes anátomo-patológicos (AU)


Criteria for both biopsy and patient referral to specialised services are reviewed in an attempt to shorten the time intervals required to reach a final diagnosis of the disease. Technical aspects of oral incisional biopsy -including biopsy site selection and sample handling to avoid artefacts- are also discussed together with basic concepts to ease interpretation of the pathologist’s report (AU)


Subject(s)
Humans , Mouth Neoplasms/diagnosis , Biopsy , Precancerous Conditions/diagnosis , Referral and Consultation , Early Detection of Cancer/methods , Risk Factors
17.
Lasers Med Sci ; 28(6): 1591-7, 2013 Nov.
Article in English | MEDLINE | ID: mdl-23324955

ABSTRACT

Laser use for biopsy of suspicious lesions may simulate cytological atypia at the margin of the incisions, challenging pathological diagnosis. Erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser has shown promising results in experimental models by inducing fewer artifacts. The aims of this study were to examine the thermal wounds induced by Er,Cr:YSGG laser in a short series of oral leukoplakias in terms of cytological and epithelial architectural changes and also to assess the width of the thermal damage lateral to the incision. Four oral leukoplakia patients entered the study and underwent complete surgical excision of their lesions by using Er,Cr:YSGG laser. Patients were weekly controlled until complete healing was accomplished. The patients were included on the existing follow-up program for these lesions thereafter. Study samples were routinely processed by the same technician and double-blindedly studied by two pathologists until a consensus was reached for each case. The pathological analysis of the samples revealed no autolysis and no fixation- or handling-related artifacts. However, cellular and nuclear polymorphism could be observed in two samples. Loss of intercellular adherence was the most frequent thermal artifact in this series; all pseudodysplastic artifacts recognized in the study were of low intensity and located at the basal and suprabasal layers of the leukoplakias' epithelium. The width of the thermal damage at the edge of the incision scored an average of 26.60 ± 25.3 µm. It is concluded that irradiation with Er,Cr:YSGG laser induces a minimal amount of thermal artifacts at the surgical margins of oral leukoplakias and avoids diagnostic interferences with real dysplastic borders.


Subject(s)
Lasers, Solid-State/therapeutic use , Leukoplakia, Oral/surgery , Adult , Aged , Female , Humans , Leukoplakia, Oral/pathology , Male , Middle Aged , Mouth Mucosa/pathology , Mouth Mucosa/surgery , Pilot Projects , Time Factors , Wound Healing
18.
Clin Otolaryngol ; 37(2): 99-106, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22429704

ABSTRACT

OBJECTIVE: To address the contradictory information on the role of delay in diagnosis on head and neck cancer survival. STUDY DESIGN: Systematic review and meta-analysis. SEARCH STRATEGY: Search on MEDLINE (1966 to March 2011), EMBASE (1980 to March 2011) and ISI proceedings (from inception to March 2011). The terms used were ('Head and neck cancers') AND ('delay'OR'prognostic'OR'survival') both in MeSH terms and free-text words. The reference lists of the retrieved articles were also revised manually to identify other potentially relevant papers. All searches were independently undertaken by two clinicians and one epidemiologist, and the results merged. SETTING: Primary and specialised care levels. PARTICIPANTS: Meta-analysis of data from papers on the subject published from 1966 to 2011. MAIN OUTCOME MEASURES: Survival. METHODS: After search in Medline and other databases, we computed pooled relative risks (RR) and 95% confidence interval (95%CI) from the 10 studies retrieved. RESULTS: The estimate of the relative risk of mortality related to any diagnostic delay (either patient or professional delay) was 1.34 (95%CI 1.12-1.61). Referral delay was associated with a three-fold increase in mortality. Total delay was marginally related to mortality (RR: 1.04, 95%CI: 1.01-1.07). By anatomic location, pharynx cancer shows the highest association (RR: 1.68, 95%CI: 1.22-2.31). CONCLUSIONS: Diagnostic delay is a moderate risk factor of mortality from head and neck cancer. However, part of the effect observed may be due to residual confounding (confounding from unknown variables that are not eliminated by adjustment).


Subject(s)
Carcinoma/diagnosis , Carcinoma/mortality , Delayed Diagnosis , Head and Neck Neoplasms/diagnosis , Head and Neck Neoplasms/mortality , Global Health , Humans , Survival Rate/trends
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