A description of the demographic characteristics of the New Zealand non-commercial horse population with data collected using a generalised random-tessellation stratified sampling design

2012 ◽  
Vol 107 (3-4) ◽  
pp. 242-252 ◽  
Author(s):  
S.M. Rosanowski ◽  
N. Cogger ◽  
C.W. Rogers ◽  
J. Benschop ◽  
M.A. Stevenson
Keyword(s):  
New Zealand ◽  
Sampling Design ◽  
Demographic Characteristics ◽  
Stratified Sampling ◽  
Horse Population ◽  
Random Tessellation ◽  
Tessellation Stratified Sampling

scholarly journals Analysis of Glaucoma Subtypes and Corresponding Demographics in a New Zealand Population

2016 ◽  
Vol 1 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Jeremy J. Mathan ◽  
Dipika V. Patel ◽  
Charles N.J. McGhee ◽  
Hussain Y. Patel
Keyword(s):  
New Zealand ◽  
Demographic Characteristics ◽  
Angle Closure ◽  
Health Board ◽  
Catchment Population ◽  
Zealand Population ◽  
Narrow Angle ◽  
Common Diagnosis ◽  
Significant Difference ◽  
Clinical Records

Purpose: The aim of this paper was to determine the diagnosis distribution and demographic characteristics of glaucoma in a New Zealand population. Methods: The clinical records of all patients presenting consecutively to the Auckland District Health Board Glaucoma Service over a 6-month period were reviewed. Demographic parameters including ethnicity, age at presentation, and gender were collected along with all clinical data. Results: The case records of 857 patients were reviewed. Primary open-angle glaucoma (POAG) was the most common diagnosis (39.0%, n = 235), followed by primary-angle closure (PAC) diagnoses (24.8%, n = 149). This group was formed by the combination of narrow angle 18.1% (n = 109), narrow-angle glaucoma 0.3% (n = 2), PAC 2.1% (n = 13), and PAC glaucoma 4.2% (n = 25). Normal-tension glaucoma (NTG; 17.4%, n = 105), secondary glaucoma (SG; 11.5%, n = 69), ocular hypertension (5.0%, n = 30), and mixed mechanism (2.3%, n = 14) were also found. There was a significant difference in the ethnic distribution in the study population compared to the catchment population (p < 0.001). Caucasian and Indian ethnicities were overrepresented, whereas the Pacific Island Nation ethnicity was underrepresented in all groups except SG. The Maori ethnicity was underrepresented in all groups except PAC. The underrepresentation was most prominent in POAG (only 2 patients of Pacific origin and 1 Maori patient with POAG). Significant differences were identified in gender distribution including a higher preponderance of females in NTG and PAC. Significant differences in age at presentation were also identified between different glaucoma subtypes and ethnicities. Markers of glaucoma severity did not vary with respect to demographic characteristics. Conclusion: In a tertiary glaucoma service in New Zealand, Maori, Pacific peoples, and, to a lesser extent, Asians are underrepresented, while Caucasians and Indians are overrepresented in the glaucoma population.

scholarly journals Optimizing a stratified sampling design when faced with multiple objectives

2006 ◽  
Vol 64 (1) ◽  
pp. 97-109 ◽  
Author(s):  
Timothy J. Miller ◽  
John R. Skalski ◽  
James N. Ianelli
Keyword(s):  
Fish Species ◽  
Quantitative Methods ◽  
Sampling Design ◽  
Multiple Objectives ◽  
Stratified Sampling ◽  
Sampling Effort ◽  
Annual Data ◽  
Sample Sizes ◽  
Analytical Results ◽  
Coverage Rates

Abstract Miller, T. J., Skalski, J. R., and Ianelli, J. N. 2007. Optimizing a stratifield sampling design when faced with multiple objectives – ICES Journal of Marine Science, 64, 97–109. For many stratified sampling designs, the data collected are used by multiple parties with different estimation objectives. Quantitative methods to determine allocation of sampling effort to different strata to satisfy the often disparate estimation objectives are lacking. Analytical results for the sampling fractions and sample sizes for primary units within each stratum of a stratified (multi-stage) sampling design that are optimal with respect to a weighted sum of relative variances for the estimation objectives are presented. Further, an approach for assessing gains or losses for each estimation objective by changing allocation of sample sizes to each stratum is provided. As an illustration, the analytical results are applied to determine optimal observer sampling fractions (coverage rates) for the North Pacific Groundfish Observer Programme (NPGOP), for which the multiple objectives are assumed to be bycatch (seabird, marine mammal, and non-targeted fish species) and total catch, and catch-at-length and -age of targeted fish species. Simultaneously optimizing a criterion that defines the strata of the NPGOP sampling design is also considered. When observer coverage rates are allowed to be gear-specific for the NPGOP design, the optimized objective function is between 10% and 28% less than the value corresponding to current sampling for annual data (2000–2003) and 12% less when optimized over all years combined.

An optimum multivariate-multiobjective stratified sampling design

METRON ◽  
2011 ◽  
Vol 69 (3) ◽  
pp. 227-250 ◽  
Author(s):  
Athar Hussain Ansari ◽  
Rahul Varshney ◽  
Najmussehar ◽  
Mohammad Jameel Ahsan
Keyword(s):  
Sampling Design ◽  
Stratified Sampling

scholarly journals Stratified Sampling Design Based on Data Mining

2013 ◽  
Vol 19 (3) ◽  
pp. 186 ◽  
Author(s):  
Yeonkook J. Kim ◽  
Yoonhwan Oh ◽  
Sunghoon Park ◽  
Sungzoon Cho ◽  
Hayoung Park
Keyword(s):  
Data Mining ◽  
Sampling Design ◽  
Stratified Sampling

scholarly journals Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. II. Distribution and diet

2003 ◽  
Vol 30 (4) ◽  
pp. 331 ◽  
Author(s):  
B. J. Sullivan ◽  
W. M. Norris ◽  
G. S. Baxter
Keyword(s):  
Sampling Design ◽  
Faecal Pellet ◽  
Stratified Sampling ◽  
Annual Rainfall ◽  
Dietary Composition ◽  
Low Density ◽  
Phascolarctos Cinereus ◽  
Faecal Pellets ◽  
South West ◽  
Biogeographic Region

This study used faecal pellets to investigate the broadscale distribution and diet of koalas in the mulgalands biogeographic region of south-west Queensland. Koala distribution was determined by conducting faecal pellet searches within a 30-cm radius of the base of eucalypts on 149 belt transects, located using a multi-scaled stratified sampling design. Cuticular analysis of pellets collected from 22 of these sites was conducted to identify the dietary composition of koalas within the region. Our data suggest that koala distribution is concentrated in the northern and more easterly regions of the study area, and appears to be strongly linked with annual rainfall. Over 50% of our koala records were obtained from non-riverine communities, indicating that koalas in the study area are not primarily restricted to riverine communities, as has frequently been suggested. Cuticular analysis indicates that more than 90% of koala diet within the region consists of five eucalypt species. Our data highlights the importance of residual Tertiary landforms to koala conservation in the region.

Family Life Events, Maternal Depression, and Maternal and Teacher Descriptions of Child Behavior

PEDIATRICS ◽  
1985 ◽  
Vol 75 (1) ◽  
pp. 30-35 ◽  
Author(s):  
D. M. Fergusson ◽  
L. J. Horwood ◽  
M. E. Gretton ◽  
F. T. Shannon
Keyword(s):  
Regression Analysis ◽  
New Zealand ◽  
Maternal Depression ◽  
Child Behavior ◽  
Life Events ◽  
Family Life ◽  
Social Economic ◽  
Teacher Ratings ◽  
Demographic Characteristics ◽  
The Relationship

The relationship between family life events, maternal depression, and teacher and maternal ratings of child behavior was studied in a birth cohort of New Zealand children. Analysis of variance and multiple regression analysis showed that for maternal ratings of child behavior, both maternal depression and family life events made significant independent contributions. For teacher ratings of child behavior, the only significant predictor was family life events. These results persisted when appropriate controls for family social, economic, and demographic characteristics were taken into account. The theoretical implications of these findings are discussed.

New Zealand Pet Owners’ Demographic Characteristics, Personality, and Health and Wellbeing: More Than Just a Fluff Piece

Anthrozoös ◽  
2020 ◽  
Vol 33 (4) ◽  
pp. 561-578
Author(s):  
Gloria Fraser ◽  
Yanshu Huang ◽  
Kealagh Robinson ◽  
Marc S. Wilson ◽  
Joseph Bulbulia ◽  
...  
Keyword(s):  
New Zealand ◽  
Demographic Characteristics ◽  
Health And Wellbeing ◽  
Pet Owners
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