However you explain it, a boss who pokes fun of his subordinates like this is interpersonally insensitive.

When colleague John Stackhouse was searching for a title for his lovely book on travelling across Canada, he decided to go with Timbit Nation.

He had always intended to visit him, though to the last always assuring his wife that he should not go; and till the evening after the visit was paid she had no knowledge of it.

Although there is an abundance of statistical literature describing (complicated) methods that can be used to investigate whether or not one is dealing with ignorable or informative missing data in a longitudinal study (see, for instance, Diggle, 1989; Ridout, 1991; Diggle et al., 1994), it is basically quote easy to investigat this matter.