| The ignorable and nonignorable nonresponse models are compared using a simulation study, and there are subtle differences between these models. |
| Here, a nonignorable nonresponse model is centered on an ignorable nonresponse model to induce some flexibility and uncertainty about ignorabilty or nonignorability. |
| Another pertinent distinction in Rubin's missing data classification system is whether the missing data mechanism is ignorable. |
| Then there's the back-channel chatter among bloggers about one of our own that's crossed the line from ignorable to Orange-alert levels. |
| The first approach assumes uniform response within imputation cells whereas the second approach assumes ignorable response but make use of a model on the variable of interest as the basis for inference. |
| What was tolerable or ignorable 30 years ago is no longer so. |
