Autore	Daly Leslie E
Edizione	[5th ed.]
Pubbl/distr/stampa	Oxford ; ; Malden, Mass., : Blackwell Science, 2000
Descrizione fisica	1 online resource (586 p.)
Disciplina	519.502461 610.21
Altri autori (Persone)	BourkeGeoffrey J (Geoffrey Joseph) BourkeGeoffrey J (Geoffrey Joseph)
Soggetto topico	Medical statistics Medicine - Research - Methodology
Soggetto genere / forma	Electronic books.
ISBN	0-470-69525-0 1-282-34171-5 9786612341717 0-470-69675-3
Formato	Materiale a stampa
Livello bibliografico	Monografia
Lingua di pubblicazione	eng
Nota di contenuto	Interpretation and Uses of Medical Statistics; Contents; Preface; Structure of the Book; 1 Describing Data -A Single Variable; 1.1 Introduction; 1.2 Types of data; 1.3 Qualitative data -simple tables and bar charts; 1.4 Picturing quantitative data; 1.5 Shapes of distributions; 1.6 Measures of central value; 1.7 Other measures of location -quantiles; 1.8 Measures of dispersion; 1.9 Summary; 2 Probability, Populations and Samples; 2.1 Introduction; 2.2 Probability; 2.3 Populations and samples; 2.4 Sample surveys; 2.5 Summary; 3 Associations: Chance, Confounded or Causal?; 3.1 Introduction 3.2 Examining associations3.3 Interpreting associations; 3.4 Associations due to chance; 3.5 Associations due to bias or confounding; 3.6 Causal associations; 3.7 Summary; 4 Confidence Intervals: General Principles; Proportions, Means, Medians, Counts and Rates; 4.1 Introduction; 4.2 The normal distribution; 4.3 Sampling variation - proportions; 4.4 Confidence intervals for a proportion; 4.5 Sampling variation - means; 4.6 Confidence intervals for a mean; 4.7 Confidence intervals for a geometric mean [!]; 4.8 Confidence intervals for a median [!] 4.9 Confidence intervals for a count or rate [!]4.10 Summary; 5 Hypothesis Testing: General Principles and One-sample Tests for Means, Proportions, Counts and Rates; 5.1 Introduction; 5.2 The null and alternative hypotheses; 5.3 The significance test; 5.4 Relationship with confidence intervals; 5.5 One-sided and two-sided tests; 5.6 General structure of a significance test: the one sample z test for a mean; 5.7 Non-significant results and power: type I errors, type II errors and sample size; 5.8 The one-sample t test for a mean; 5.9 The one-sample z test for a proportion 5.10 The one-sample x2 test for many proportions [!]5.11 The one-sample z test for counts or rates; 5.12 Small sample sizes and the validity of assumptions [!]; 5.13 Summary; 6 Epidemiological and Clinical Research Methods; 6.1 Introduction; 6.2 Observational and experimental studies; 6.3 The cross-sectional study or survey; 6.4 The cohort study; 6.5 Measures of association in cohort studies; 6.6 Risk with variable-time follow-up [!]; 6.7 The case-control study; 6.8 Measures of association in case-control studies - the odds ratio; 6.9 The analysis of cohort and case-control studies [!] 6.10 Comparisons of cohort and case-control studies6.11 The randomized controlled trial; 6.12 Applicability versus validity of trial results; 6.13 Alternative trial designs; 6.14 Ethical considerations for trials; 6.15 Summary; 7 Confidence Intervals and Hypothesis Tests: Two-group Comparisons; 7.1 Introduction; 7.2 Independent and paired comparisons; 7.3 Parametric and non-parametric significance tests; 7.4 Comparison of two independent means; 7.5 Inferring significance from confidence intervals; 7.6 Comparison of two independent geometric means [!]; 7.7 Comparison of two independent medians 7.8 Comparison of paired means
Record Nr.	UNINA-9910134123803321