This is largely explained by required blood management visits at baseline during morning weekdays, which may have alternatively required missed workdays.
The use of second lagged values in the first-stage equations requires missing waves 1 and 2 in the instrumented model.
"The only downside to these visits is that they often require missing some classes during one's senior year, just as thesis deadlines are starting to loom.
The U.S. State Department, citing a law that requires missing persons to sign a waiver before information about them can be released, refused to comment or confirm that Zeltser had been detained.
While playing the part of Patel, a gamer must make decisions such as whether to send his or her teenage daughter to work at a factory with a presence of sex trafficking in order to make more money and whether to stay home with a sick child, which would require missing one day's worth of wages.
Urban residence was associated with limited ability to comply with recommendations that require missing work.
This method does not require missing data to be imputed but considers such data ignorable.
You must put the time to be successful in coaching, which may require missing vacations and trips that other people your age get to enjoy.
Among those changes: improving recordkeeping and supervision and requiring missed home visits to be made up immediately instead of within two weeks.
