[R] patterns of missing data: determining monotonicity

2005-01-06 Thread Michael Friendly
Here is a problem that perhaps someone out here has an idea about. It vaguely reminds me of something I've seen before, but can't place. Can anyone help? For multiple imputation, there are simpler methods available if the patterns of missing data are 'monotone' --- if Vj is missing then all v

RE: [R] patterns of missing data: determining monotonicity

2005-01-07 Thread Ted Harding
On 06-Jan-05 Michael Friendly wrote: > Here is a problem that perhaps someone out here has an idea > about. It vaguely reminds me of something I've seen before, > but can't place. Can anyone help? > > For multiple imputation, there are simpler methods available > if the patterns of missing data