We present some sufficient conditions such that Eq. (1) only has solutions with zero points in (0,∞). Moreover, we also obtain some conditions such that Eq. (1) has a positive solution on [0,+∞). The motivation of this work comes from the work of Ladas, Philos and Sficas [5]. They discussed the oscillation behavior of Eq. (1) when P (t, s) = P (t− s) and g(t) = t. They obtained a necessary and ...

BACKGROUND While age is a common confounder, its impact on health-related quality of life (HRQoL) after total hip replacement is uncertain. This could be due to improper statistical modeling of age in previous studies, such as treating age as a linear variable or by using age categories. We hypothesized that there is a non-linear association between age and HRQoL. METHODS We selected a nation...

The aim of this study was to investigate the performance of the recent EQ-5D-Y instrument compared with the standard EQ-5D in assessing the health-related quality of life of high school children in Cape Town. Either the EQ-5D or the EQ-5D-Y was given to high school children. The sample consisted of 521 respondents. The EQ-5D-Y was found to be superior in that there were statistically significan...

BACKGROUND Existing evidence for validity of the visual analog scale of the EQ-5D-3L questionnaire (EQ-VAS) is weak in Chinese-speaking respondents in Singapore. We therefore investigated the validity of the Chinese (Singapore) version of EQ-VAS in patients with diabetes. METHODS In a cross-sectional survey, patients with type 2 diabetes seen in a primary care facility completed an identical ...

INTRODUCTION A Polish EQ-5D normative study published in 2010 was conducted in 2008 as a pilot study. The group of respondents was relatively small and had limited representativeness. OBJECTIVES The aim of the study was to derive population norms for the 3-level EQ-5D (EQ-5D-3L) questionnaire in Poland using a large, representative sample. RESPONDENTS AND METHODS Stratified random sampling ...

Objective: To analyse the psychometric properties of the EuroQol questionnaire (EQ-5D) applied to patients with acute coronary syndromes (ACS). Setting: Rehabilitation hospital. Patients and design: 106 consecutive patients with ACS (51% myocardial infarction, 42% coronary artery bypass grafting, 7% angina) completed the EQ-5D, the 36 item short form health survey (SF-36), and the MacNew questi...

background : sensory impairment is a common condition that exerts negative effects on health-related quality of life (hrqol) in the elderly. this study aimed to determine the relationship between sensory impairment and hrqol and identify sensory-specific differences in the hrqol of elderly. methods : this study used data from the korean national health and nutrition examination survey v (2010-2...

BACKGROUND The effect of enzalutamide on health-related quality of life (HRQoL) in the PREVAIL trial in chemotherapy-naïve men with metastatic castration-resistant prostate cancer was analyzed using the generic EQ-5D instrument. METHODS Patients received oral enzalutamide 160 mg/day (n = 872) or placebo (n = 845). EQ-5D index and EQ-5D visual analogue scale (EQ-5D VAS) scores were evaluated a...

BACKGROUND/AIMS An association between metabolic syndrome and impaired health-related quality of life (HRQoL) is still controversial. We investigated the association between metabolic syndrome in itself and HRQoL in the Korean adult population. METHODS The study is a cross-sectional analysis of 8,941 adults ≥19 years of age who participated in the 2007 and 2008 Korean National Health and Nutr...

BACKGROUND This paper investigates the properties and performance of the two generic measures, EQ-5D and SF-12, for Health-Related Quality of Life (HRQoL) assessments of pregnant women living with HIV in Kunming City, Yiliang County, Daguan County, Longchuan County, Tengchong County, Longling County and Fengqing County in Yunnan Province, China. METHODS As part of a screening programme for th...