This decision was taken by the researchers prior to data collection due to the risk that the many drug and equipment indicators (60 of the 104 indicators) would weigh the study too greatly towards the availability of these items.
This paper emphasizes the importance of identifying and considering 'purchase dependence,' which is when the purchase of an item is dependent on the availability of the other items demanded in the same order.
Successful implementation of immunisation programmes requires adequate availability of all the items outlined in all the building blocks of the WHO health system framework.
This bird eats fish in coastal waters and insects and other invertebrates both along the coast and inland; occasionally, it will feed on grains and berries, depending on the availability of the main items in its diet.
Recently, a six-item questionnaire has been validated, 37 but we followed Erol et al because our study was started prior to the availability of the six-item version.
The first set of challenges resulted from the WISN software itself, while the second concerned the lack of availability of particular data items at the national level.
The availability of an item advertised, at the price advertised, goes to the very heart of truthful advertising.
In one episode, Sheldon goes to a computer store and is soon being asked for advice from tech-illiterate customers, to the point where he hacks into the store's mainframe to check on the availability of an item.
Taken together, it is possible to achieve fine control over where and how well a given item set measures a latent trait along the latent trait distribution (subject to the availability of items with the desired parameters).
