Gary G. Koch

The measurement of observer agreement for categorical data.

This paper presents a general statistical methodology for the analysis of multivariate categorical data arising from observer reliability studies. The procedure essentially involves the construction… (More)

An application of hierarchical kappa-type statistics in the assessment of majority agreement among multiple observers.

Categorical Data Analysis Using the SAS System (2000): 57

Maura E. Stokes, Charles A. Davis, Gary G. Koch
2000

U. S. Householder survey of functional gastrointestinal disorders

Dr Douglas A. Drossman, Zhiming Li, +9 authors Gary G. Koch
Digestive Diseases and Sciences
1993

Our objective was to obtain national data of the estimated prevalence, sociodemographic relationships, and health impact of persons with functional gastrointestinal disorders. We surveyed a… (More)

Secondary sexual characteristics and menses in young girls seen in office practice: a study from the Pediatric Research in Office Settings network.

Marcia E. Herman-Giddens, Eric J. Slora, +4 authors Cynthia M. Hasemeier
Pediatrics
1997

OBJECTIVE To determine the current prevalence and mean ages of onset of pubertal characteristics in young girls seen in pediatric practices in the United States. METHODS A cross-sectional study was… (More)

Analysis of categorical data by linear models.

James Grizzle, C. Frank Starmer, Gary G. Koch
Biometrics
1969

An evaluation of Safe Dates, an adolescent dating violence prevention program.

Vangie A. Foshee, Karl E. Bauman, Ximena B. Arriaga, Ronald W. Helms, Gary G. Koch, Gloria Linder
American journal of public health
1998

OBJECTIVES This study assessed the effects of the Safe Dates program on the primary and secondary prevention of adolescent dating violence. METHODS Fourteen schools were randomly allocated to… (More)

Intraclass Correlation Coefficient

William D. Johnson, Gary G. Koch
2011

Validation of the Minimum Data Set Cognitive Performance Scale: agreement with the Mini-Mental State Examination.

S L Hartmaier, Philip D. Sloane, Harry A. Guess, Gary G. Koch, Christine M. Mitchell, Charles D. F. Phillips
The journals of gerontology. Series A, Biological…
1995

BACKGROUND Almost all nursing homes in the United States are required by the 1987 Omnibus Budget Reconciliation Act to assess each resident's functional, medical, psychosocial, and cognitive status… (More)

Cognitive-behavioral therapy versus education and desipramine versus placebo for moderate to severe functional bowel disorders.

Douglas A. Drossman, Brenda B. Toner, +18 authors Shrikant I. Bangdiwala
Gastroenterology
2003

BACKGROUND & AIMS Studies of antidepressants and psychological treatments in functional bowel disorders (FBD) are methodologically limited. The aim of this study was to assess the clinical efficacy… (More)

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