BACKGROUND Since the direct questions usually underestimate the frequency of sensitive behaviors, indirect methods can be used to estimate the frequency of some risky behaviors such as illicit drug use, sexual behaviors especially where these behaviors are highly stigmatized. OBJECTIVES In the current study, we indirectly estimated the prevalence of some risky behaviors among college students...

BACKGROUND In Islamic countries alcohol consumption is considered as against religious values. Therefore, estimation of frequency of alcohol consumptions using direct methods is prone to different biases. In this study, we indirectly estimated the frequency of alcohol use in Iran, in network of a representative sample using network scale up (NSU) method. METHODS In a national survey, about 40...

network scale-up is an indirect method for estimating the size of hidden, hard-to-count or high risk populations. social network size estimation is the first step in this method. the present study was conducted with the purpose of estimating the social network size of the tehran province residents and its determinants.maximum likelihood estimation was applied to estimate people's network sizes ...

Objective Abortion is a sensitive issue surrounded with social, cultural and religious stigma. Therefore, estimation of its prevalence involves methodological challenges. The aim of this manuscript is to estimate the abortion prevalence, stratified by type, using direct and two indirect methods. MaterialsAndMethods : In a cross-sectional study in 2016, we recruited 1020 women aged 18-49 years. ...

BACKGROUND Network Scale-up (NSU) method is an indirect method for the estimation of hidden behaviors. In NSU, respondents are asked about the number of members they know from a subpopulation of interest (e.g., injecting drug user) and assume that the prevalence of risky behavior in the networks of a random sample of respondents is similar to that of the population. However, first, we need to i...

objective: to estimate the size of groups at high risk of hiv, network scale up (nsu), an indirect method, was used. methods: 500 kermanian male aged 18 to 45 were recruited. 8 groups at high risk of hiv were defined: users of opium, unknown drug, ecstasy, and alcohol; intra‑venous drug users (idus; males who have extra‑marital sex with females (msf); male who have sex with female sex workers (...

OBJECTIVES The size of active network (C) of Iranian population is a very important parameter to estimate the size of unknown population using Network Scale Up (NSU) technique. However, there is little information about this parameter not only in Iran but also in other countries in Middle East region. Based on these needs, the aim of this paper is to estimate C for the Iranian population. MET...

BACKGROUND The model of care for patients with mild-to-moderate head injury and CT-detected lesions that do not require an immediate intervention is a matter of debate. This study compared the effects on outcome of a model based either on observation in a neurosurgical unit (NSU) or in a peripheral hospital (PH), making use of neurosurgical expertise via a teleradiology system. PATIENTS AND M...

'NSU Corynebacteria' are commensals of the normal male and female urogenital tracts (Furness, Kamat, Kaminski, and Seebode, 1973). They are so called because they were first described in association with NSU (Fmrness and Csonka, 1966), and the term is retained so that they should not be confused with other diphtheroids, which in contrast are easily isolated on commercial media and are well-know...

Chlamydia trachomatis was isolated from 58.5% of 159 patients with non-specific urethritis (NSU) using irradiated McCoy cell cultures. Patients with persistent Chlamydia-positive NSU remained Chlamydia-positive each time they were examined before treatment and patients with Chlamydia-negative NSU remained Chlamydia-negative during the course of the illness. Neither the duration of symptoms of u...