Now showing items 1-20 of 1813

    • HOUSEHOLD MARKET AND NON-MARKET ACTIVITIES - DESIGN ISSUES FOR A PILOT STUDY 

      Johnsson, Tommy (University of Gothenburg, 1982-02-01)
      The design of a pilot survey of households is the subject of this paper. A few methods to collect data about consumption expenditures and time-use are to be compared. Among the design issues are the allocation of the ...
    • ANALYS AV KATEGORISKA DATA - En metodstudie i anslutning till statsvetenskaplig forskning. 

      Eriksson, Sven (University of Gothenburg, 1983-02-01)
      Inriktningen av denna rapport har praglats av forfattarens erfarenheter fran arbetet med urvalsplaner for delundersokningarna avseende medborgare, politiker och tjansteman inom forskningsprogrammet 1979-1981 for utvardering ...
    • NONPARAMETRIC REGRESSION WlITH SIMPLE CURVE CHARACTERISTICS 

      Holm, Sture; Frisen, Marianne (University of Gothenburg, 1985-04-01)
      The character of nonparametric statistical methods is that they are constructed for very general situations, without the specific narrow assumptions, which appear in the common parametric methods. Isotonic regression is a ...
    • MULTIPLE COMPARISON TESTS BASED ON THE BOOTSTRAP 

      Johnsson, Tommy (University of Gothenburg, 1986-01-01)
      A multiple test procedure for pairwise comparisons based on the bootstrap is presented. It is a stagewise test without any distributional assumptions. It is also very general according to the number and types of hypotheses ...
    • PARAMETRIC AND NONPARAMETRIC TESTS FOR BXOEQUIVALENCE TRIALS 

      Dahlbom, Ulla; Holm, Sture (University of Gothenburg, 1986-02-01)
      In pharmacology, comparison of bioavailability is an important problem. A new formulation of a drug is compared with a standard formulation in human subjects. When the extent of absorption is studied the areas under the ...
    • A TIPPETT-ADAPTIVE METHOD OF COMBINING INDEPENDENT STATISTICAL TESTS. 

      Westberg, Margareta (University of Gothenburg, 1986-03-01)
      A new procedure is proposed in order to combine the information of P-values obtained from several independent tests in order to test an overall hypothesis. The test statistic of this new procedure is of the same type as ...
    • TESTING THE APPROXIMATE AGREEMENT WITH A HYPOTHESIS 

      Frisén, Marianne (University of Gothenburg, 1986-05-01)
      When statistical tests are applied it is often known beforehand that the hypotheses would be rejected with sufficiently narge sample sizes. This happens whenever hypotheses is not exactly true but only approximately true. ...
    • ABSTRACT BOOTSTRAP CONFIDENCE INTERVALS IN LINEAR MODELS 

      Holm, Sture (University of Gothenburg, 1990-01-01)
      A bootstrap method for generating confidence intervals in linear models is suggested. The method is motivated by an abstract nonobservable bootstrap sample of true residuals leading to an observable final result. This means ...
    • ON TESTS OF EQUIVALENCE 

      Holm, Sture; Dahlbom, Ulla (University of Gothenburg, 1990-02-01)
      We will study here a general method for constructing equivalence tests for problems with onedimensional or multidimensional parameter. In the biometric field, the equivalence tests have been studied by many authors under ...
    • ON SOME PREDICTION METHODS FOR CATEGORICAL DATA 

      Olofsson, Jonny (University of Gothenburg, 1991-01-01)
      Good prediction methods are important in many fields where qualitative variables are involved. The criterion of a good prediction method, used in this paper, is the average mean squared error. This criterion is used to ...
    • ON THE PROBLEM OF OPTIMAL INFERENCE IN THE SIMPLE ERROR COMPONENT MODEL FOR PANEL DATA 

      Jonsson, Robert (University of Gothenburg, 1991-02-01)
      For data consisting of cross sections of units observed over time, the Error Component Regression (ECR) model, with random intercept and constant slope, may sometimes be adequate. While most interest has been focused on ...
    • STATISTICAL RANK METHODS FOR ORDINAL CATEGORICAL DATA 

      Holm, Sture; Svensson, Elisabeth (University of Gothenburg, 1991-03-01)
      The aim of this paper is to present a new rank. method for analysing ordinal scale problems, and to give some of its basic properties. The method is suitable for the assessment of validity and reliability of health measurement ...
    • ASPECTS OF MODELLING NONLINEAR TIME SERIES 

      Teräsvirta, Timo; Tjøstheim, Dag; Granger, Clive W J (University of Gothenburg, 1992-01-01)
      It is common practice for economic theories to postulate non-linear relationships between economic variables, production functions being an example. If a theory suggests a specific functional form, econometricians can ...
    • Exact Semiparametric Inference About the Within-Subject Variability in 2 x 2 Crossover Trails. 

      Guilbaud, Olivier (University of Gothenburg, 1992-03-01)
      The comparison of primary interest in a 2 x 2 crossover trial typically concerns the effect of the treatments, say A and B, on the mean response level. This article deals with another important aspect, namely the within-subject ...
    • SEPARATION OF SYSTEMATIC AND RANDOM ERRORS IN ORDINAL RATING SCALES 

      Svensson, Elisabeth; Holk, Sture (University of Gothenburg, 1992-04-01)
      The aim of this paper is to introduce a new rank method which enables us to separate the inconsistency of repeated measurements into random and systematic differences and to quantify this lack of consistency in a few ...
    • COMPARISON BETWEEN TWO METHODS OF SURVEILLANCE: EXPONENTIALLY WEIGHTED MOVING AVERAGE VS CUSUM 

      Frisén, Marianne; Åkermo, Göran (University of Gothenburg, 1993-01-01)
      When control charts are used in practice it is necessary to know the characteristics of the charts in order to know which action is appropriate at an alarm. The probability of a false alarm, the probability of successful ...
    • EXACT PROPERTIES OF McNEMAR'S TEST IN SMALL SAMPLES 

      Jonsson, Robert (University of Gothenburg, 1993-02-01)
      The exact distribution of McNemar's test statistic is used to determine critical pOints for two-sided tests of equality of marginal proportions in the correlated 2x2 table. The result is a conservative unconditional test ...
    • RESAMPLING PROCEDURES IN LINEAR MODELS 

      Gellerstedt, Martin (University of Gothenburg, 1993-03-01)
      We will study here different resampling procedures for creating confidence sets in linear models. A special technique called abstract resampling makes it possible to use the true residuals and the true model for resampling. ...
    • Statistical surveillance of business cycles 

      Frisén, Marianne (University of Gothenburg, 1994-01-01)
      Methods for timely detection of turning-points in business cycles are discussed from a statistical point of view. The theory on optimal surveillance is used to characterize different approaches advocated in literature. ...
    • CHARACTERIZATION OF METHODS FOR SURVEILLANCE BY OPTIMALITY 

      Frisén, Marianne (University of Gothenburg, 1994-02-01)
      Different criteria of optimality are discussed. The shortcomings of some earlier criteria of optimality are demonstrated by their implications. The correspondences between some criteria of optimality and some methods are ...