Given a passage, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.

[Q]: The purpose of this study was to evaluate the impact of FDG-PET following chemoradiotherapy (CRT) on treatment planning and survival in patients with oesophageal cancer (OC).', 'Fifty-three consecutive OC patients had a post-treatment PET scan to evaluate tumour response to CRT prior to possible surgery. Baseline pre-CRT PET was performed in 33 patients. Prospectively recorded post-CRT management plans were compared with post-PET treatment. High impact was defined as a change in treatment intent or modality. Survival was analysed using the Kaplan-Meier product limit method and Cox proportional hazards regression model.', 'After completion of CRT, 23/53 patients (43%) achieved complete metabolic response (CMR), as compared with only four (8%) with complete response on computed tomography. High PET impact was observed in 19 patients (36%). CMR was strongly predictive of survival (p<0.008) on multivariate analysis. CMR patients in whom resection was not performed had comparable survival to those (CMR and non-CMR) who underwent resection.
[A]: Does fDG-PET status following chemoradiotherapy provide high management impact and powerful prognostic stratification in oesophageal cancer?


[Q]: To evaluate newly diagnosed non-arteritic anterior ischaemic optic neuropathy (NAION) patients for the existence of an associated sleep apnoea syndrome.', 'Newly identified NAION patient underwent polysomnography. The prevalence of sleep apnoea in NAION patients was compared to the prevalence previously found in the general population. Hypertension, diabetes, hyperlipidaemia, and atheromatous lesions of carotid vessels as classic risk factors associated with NAION were also identified.', '27 consecutive newly diagnosed NAION patients (18 men and nine women, mean age 65 (SD 8) years, body mass index 27.2 (3.8) kg/m2) were included in the study. 24 of these 27 NAION patients (89%) exhibited a sleep apnoea syndrome (respiratory disturbance index: 37.2/h (SD 18.3/h). Risk ratio for a NAION patient to have sleep apnoea was 4.9 compared to the general population (p < 0.001). Sleep apnoea was 1.5-2-fold more frequent than the rate of the other identified risk factors typically associated with NAION (hypertension, diabetes).
[A]: Is non-arteritic anterior ischaemic optic neuropathy nearly systematically associated with obstructive sleep apnoea?


[Q]: Lateral compression pelvic Type I fractures in the elderly population are most often low-energy osteoporosis related fractures. Previous literature comparing pelvic fractures in young versus elderly patients called into question the general consideration of these injuries as benign injuries with favorable prognoses; however, the geriatric population older than 80 years is often underrepresented. This article focuses on the mortality and functional outcomes after low-energy pelvic fractures in a population of patients older than 80 years.', "We prescreened potential subjects in a Level I trauma institution's electronic medical record database between January 1, 2002, and April 30, 2012, to identify isolated lateral compression Type 1 fractures treated nonoperatively in patients older than 80 years. This study was composed of a retrospective review of medical records followed by a prospective survey data collection to examine mechanisms of injury, length of hospital stay, complications, medical comorbidities, ambulatory function, living situation, pain, and 1 year mortality rates.", 'We present a large case series of 85 patients older than 80 years and report a 1-year mortality rate of 20%. We found that patients who were household ambulators or nonfunctional ambulators were five times more likely (24.4% vs. 6.1%) to die within 1 year after injury. Multivariate logistic regression confirmed that the risk of 1-year mortality was significantly higher for household-bound patients compared with community ambulators, independent of sex, smoking, Charlson comorbidity index, or length of hospital stay.
[A]:
Is preinjury ambulatory status associated with 1-year mortality following lateral compression Type I fractures in the geriatric population older than 80 years?