Understanding the Standardized Index of Dissimilarity: Reply to Massey

1978 ◽  
Vol 43 (4) ◽  
pp. 590 ◽  
Author(s):  
Charles F. Cortese ◽  
R. Frank Falk ◽  
Jack Cohen
Keyword(s):  
Standardized Index ◽  
Index Of Dissimilarity

Translocation Relative to Range

Methodology ◽  
2008 ◽  
Vol 4 (3) ◽  
pp. 132-138 ◽  
Author(s):  
Michael Höfler
Keyword(s):  
Risk Difference ◽  
Binary Outcomes ◽  
Number Needed To Treat ◽  
Likert Scales ◽  
Psychological Science ◽  
The Absolute ◽  
The Difference ◽  
Variance Parameters ◽  
Standardized Index ◽  
Maximum Possible Magnitude

A standardized index for effect intensity, the translocation relative to range (TRR), is discussed. TRR is defined as the difference between the expectations of an outcome under two conditions (the absolute increment) divided by the maximum possible amount for that difference. TRR measures the shift caused by a factor relative to the maximum possible magnitude of that shift. For binary outcomes, TRR simply equals the risk difference, also known as the inverse number needed to treat. TRR ranges from –1 to 1 but is – unlike a correlation coefficient – a measure for effect intensity, because it does not rely on variance parameters in a certain population as do effect size measures (e.g., correlations, Cohen’s d). However, the use of TRR is restricted on outcomes with fixed and meaningful endpoints given, for instance, for meaningful psychological questionnaires or Likert scales. The use of TRR vs. Cohen’s d is illustrated with three examples from Psychological Science 2006 (issues 5 through 8). It is argued that, whenever TRR applies, it should complement Cohen’s d to avoid the problems related to the latter. In any case, the absolute increment should complement d.

Stieltjes classes for moment-indeterminate probability distributions

2004 ◽  
Vol 41 (A) ◽  
pp. 281-294 ◽  
Author(s):  
Jordan Stoyanov
Keyword(s):  
Probability Distributions ◽  
Classical Problem ◽  
Inverse Gaussian ◽  
Positive Order ◽  
Power Transformations ◽  
Log Normal ◽  
Open Question ◽  
Indeterminate Probability ◽  
Index Of Dissimilarity ◽  
Finite Moments

Let F be a probability distribution function with density f. We assume that (a) F has finite moments of any integer positive order and (b) the classical problem of moments for F has a nonunique solution (F is M-indeterminate). Our goal is to describe a , where h is a ‘small' perturbation function. Such a class S consists of different distributions Fε (fε is the density of Fε) all sharing the same moments as those of F, thus illustrating the nonuniqueness of F, and of any Fε, in terms of the moments. Power transformations of distributions such as the normal, log-normal and exponential are considered and for them Stieltjes classes written explicitly. We define a characteristic of S called an index of dissimilarity and calculate its value in some cases. A new Stieltjes class involving a power of the normal distribution is presented. An open question about the inverse Gaussian distribution is formulated. Related topics are briefly discussed.

scholarly journals Carabus (Coleoptera: Carabidae) assemblages of native forests and non-native plantations in Northern China

2004 ◽  
Vol 15 (3) ◽  
Author(s):  
Xiao-Dong Yu ◽  
Tian-Hong Luo ◽  
Hong-Zhang Zhou
Keyword(s):  
Northern China ◽  
Abundant Species ◽  
Oak Forest ◽  
Larch Plantation ◽  
Clear Cutting ◽  
Native Forests ◽  
Broad Leaved Forest ◽  
Forest C ◽  
Index Of Dissimilarity ◽  
Leaved Forest

The effects of non-native plantation established after clear-cutting were studied in Dongling Mountain region, Northern China. Pitfall catches of Carabus beetles from a non-native larch plantation were compared with those from two native forests, an oak forest and a mixed broad-leaved forest. More individuals were captured from the mixed broad-leaved forest and the larch plantation than from the oak forest. For the threemost abundant species in this area, C. crassesculptus peaked in abundance in the mixed broad-leaved forest; C. manifestus peaked in the larch plantation, and C. sculptipennis in the oak forest. Measured by PcoAusing Bray-Curtis index of dissimilarity, species composition of the larch plantation was different from the two native forests, but overlapped remarkably with them. All the three abundant species showed a similar positive relationship between local distribution and abundance. Captures of abundant species were clumped within the forest, but the extent of aggregation among forests was different. Monthly catches of total Carabus, and C. crassesculptus alone, peaked in June–August in all the three forests, but C. manifestus peaked in June and again in August. Our results suggest that the planting of non-native larch does not have a detrimental effect on Carabus assemblages in general, but it changes the spatial distribution and abundance compared to the native forests.

scholarly journals Development of the WISH (Well-Aging Indexing for Senior Health) Platform for Happiness

2018 ◽  
Vol 4 (3) ◽  
pp. 36 ◽  
Author(s):  
Hang-Sik Park ◽  
Hee-Gyoo Kang ◽  
Myung-Chul Kim ◽  
Jiyeong Lee ◽  
Jean-kyung Paik
Keyword(s):  
Chronic Diseases ◽  
Average Length ◽  
Age Groups ◽  
Well Being ◽  
Elderly Adults ◽  
Health It ◽  
Life Patterns ◽  
Standardized Index ◽  
Length Of Hospitalization ◽  
Senior Health

Humans now have a life expectancy of nearly 90 years and, as a result, society is rapidly aging. These longer life spans have, however, increased the average length of hospitalization for elderly adults suffering from chronic diseases such as cancer, diabetes, and encephalopathy. In a recent survey of 10 well-being indices for elderly adults, the top demands for well-being are physical, spiritual, and psychological. Thus, we developed the WISH (Well-aging Indexing for Senior Health) Platform to enhance the normalizing exponents using survey data. Nowadays, the incidence of many chronic diseases is increasing. Thus, we designed the WISH Platform using clinical research on depression, cerebral infarction, coronary artery, and rheumatism, which are common diseases in Koreans. By applying this study to chronic diseases, which manifest differently among elderly adults across different countries, it is possible to determine influential nutrition and life patterns to create a standardized index. Such an index will help create value for the happiness of active elderly people, which in turn will aid in their efforts to maintain health; it may even benefit health promotion in other age groups.

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