KOSTRA indicators (20)


Twenty indicators based on KOSTRA

I have constructed a set of indicators based on the KOSTRA variables. I think six of them will be of particular interest to people outside the library field, such as managers and politicians in the municipal sector. These indicators are particularly relevant for advocacy. They can be identified as A1-3, B1-2 and C1.

The fifteen library variables covered by KOSTRA  are listed at the bottom of the page.

External indicators (advocacy)

A. Output indicators
  1. visits per capita
  2. loans per capita
  3. level of activity, defined as the sum of visits and loans per capita
B. Input indicators
  1. staff per 10.000 inhabitants, measured as full time equivalents (FTE)
  2. operational costs, defined as the sum of media and salary expenses per capita
C. Productivity indicator
  1. level of productivity, defined as the ratio between the level of activity and the operational costs

The level of productivity can also be written as:

  • productivity = (no. of visits + no. of loans)/(media expenses+ salary expenses)

Internal indicators (management)

The remaining indicators are aimed at the library staff and hence more technical in nature:

D. Expenses

  1. salary expenses per FTE
  2. media expenses per accession
  3. media expenses as a percentage of (salary + media) expenses
E. Turnover
  1. turnover of non-fiction = loans of non-fiction / stock of non-fiction
  2. turnover of fiction  = loans of fiction / stock of fiction
  3. turnover of children’s books = loans of children’s books / stock of children’s books
F. Loans
  1. loans per visit
  2. loans of non-book media per inhabitant
  3. loans of non-fiction books per adult
  4. loans of fiction books per adult
  5. loans of children’s books per child
G. Lending pattern
  1. loans of non-book media as a percentage of all loans
  2. loans of non-fiction books as a percentage of all adult book loans
  3. loans of children’s books as a percentage of all book loans
These indicators can be used to compare libraries that differ somewhat in size.
I have decided (June 2011) to limit my standard indicator set to twenty indicators. Other indicators may be constructed for special purposes.

Specialized indicators

H. Collection development
  1. accessions per capita
  2. stock of non-fiction books per adult
  3. stock of fiction books per adult
  4. stock of children’s books per child
  5. stock of non-fiction books as a percentage of adult book stock
  6. stock of children’s books as a percentage of total book stock

Fifteen variables

After a revision in 2007 KOSTRA covers fifteen variables drawn from the public library sector:

  1. the number of library visits
  2. loans of children’s books
  3. stock of children’s books
  4. loans of fiction books (adults)
  5. stock of fiction books
  6. loans of non-fiction books (adults)
  7. stock of non-fiction books
  8. loans of audio books
  9. loans of videos
  10. loans of music
  11. loans of other media («non-book loans»)
  12. number of accessions
  13. total media expenses
  14. total salary expenses
  15. total staff (FTEs – full time equivalents)

These variables describe fifteen different characteristics of the library organization  All variables tend to be roughly proportional to the size of the population served.

Demographic variables

In addition, two demographic variables are included:

16. total population served
17. population 0-13 years served
  1. Ingen kommentarer så langt.
  1. 2011-06-25, kl. 09:00
  2. 2011-07-01, kl. 16:46
  3. 2011-07-05, kl. 00:56
  4. 2011-07-06, kl. 23:19
  5. 2011-07-07, kl. 10:48

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