M. Asaduzzaman Khan

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OBJECTIVE Presently, normative wideband reflectance data are available for neonates who have passed a distortion product otoacoustic emission test. However, passing the distortion product otoacoustic emission test alone does not ensure normal middle ear function. The objective of this study was to establish normative wideband reflectance data in healthy(More)
Based on a study sample of 1071 primary school children (5.3-11.7 years), 10.2% of the children were found to have conductive hearing loss in 1 or both ears. Binaural speech comprehension scores of a subset of 540 children were analyzed. The results showed that children with bilateral conductive hearing loss had the lowest mean scores of 60.8-69.3% obtained(More)
Comparative effects of oyster mushrooms on plasma and fecal lipid profiles and on liver and kidney function were evaluated in hyper and normocholesterolemic rats. Feeding of hypercholesterolemic rats a 5% powder of oyster mushrooms (Pleurotus ostreatus, P. sajor-caju and P. florida) reduced the plasma total cholesterol level by 37%, 21% and 16%,(More)
Excessive accumulation of arsenic (As) in rice (Oryza sativa L.) may pose a health risk to rice consumers. Long-distance transport of As within plant tissues is not well understood. The aim of our study was to evaluate As translocation from roots to shoots and from shoot tissues to rice grain. At the grain filling stage, 73As-labelled arsenite was fed to(More)
Mushroom cultivation has been started recently in Bangladesh. Awareness of the nutritional and medicinal importance of mushrooms is not extensive. In this study, the nutritional values of dietary mushrooms- Pleurotus ostreatus, Pleurotus sajorcaju, Pleurotus florida and Calocybe indica that are very popular among the cultivated mushrooms in Bangladesh have(More)
OBJECTIVE Good test-retest reliability of high frequency (≥ 8 kHz) pure-tone audiometry (HFPTA) is essential to detect significant changes in hearing threshold caused by ototoxicity. While the test-retest reliability of HFPTA in adults has been extensively studied, such investigations in children are scant. This study aimed to evaluate the test-retest(More)
OBJECTIVE To investigate whether using a parametric statistic in comparing groups leads to different conclusions when using summative scores from rating scales compared with using their corresponding Rasch-based measures. METHODS A Monte Carlo simulation study was designed to examine between-group differences in the change scores derived from summative(More)
The Kessler six-item psychological distress (K6) scale is widely used to screen for mental disorders; however, information is lacking on the rating scale performance or dimensionality structure of the scale. This study used a population based sample (n = 7596) to evaluate the construct validity of the K6 scale using Rasch partial credit analysis. The(More)
Cancer burden among children and adolescents is largely unknown in Bangladesh. This study aims to provide a comprehensive overview on childhood and adolescent cancers and to contribute to the future strategies to deal with these diseases in Bangladesh. Data on malignant neoplasms in patients aged less than 20 years diagnosed between 2001 and 2014 (N = 3143)(More)
OBJECTIVES The purpose of this study was to evaluate the test performance of wideband absorbance (WBA) in terms of its ability to predict the outer and middle ear status as determined by nine reference standards. DESIGN Automated auditory brainstem response (AABR), high-frequency (1000 Hz) tympanometry (HFT), transient evoked otoacoustic emission (TEOAE),(More)