Underlying these techniques is the assumption that responses to individual items are caused by an underlying construct [ 37].
Thus, any identified association with antibiotics is at risk of confounding by indication (the putative cause and effect items are caused by a third event), for which adjustment is impossible owing to a lack of information.
Real change is (roughly) change involved in causing something, change an item is caused to undergo or change not "logically parasitic" on change in other things.
A survey by the Association of Flight Attendants found "excess amounts of oversized carry-on items" were causing flight attendants to be injured.
Bolt et al. (2002) developed their two-class mixture model to reduce the bias in item parameters that is caused by test speededness in high-stakes tests.
In a recent study, the HYBRID model (Yamamoto 1995) and the two-class mixture model of Bolt et al. (2002) were compared with regard to their capability to reduce the bias in item parameters that is caused by test speededness (Suh et al. 2012).
If these items were disclosed, harm is caused to the reputation of the data sources and may lead to financial losses.
Often a writedown that a company takes on its shareholder report is caused mostly by items that cannot be immediately claimed as tax deductions, and at least one GM finance executive I talked to said that tax deductions had nothing to do with the death of Olds.
Therefore, we concluded that although a small difference between genders in relation to the disability associated with low back pain does exist, much of it is caused by differential item functioning than a true association with the disability construct.
In each of these items differences were caused by a higher severity score given by the parent, e.g. for pain eight (out of 29) parents scored moderate to severe problems whereas the child scored only mild.
