The majority of spells included a $15 PFPM premium amount (70 percent), family income of 101-150 percent FPL (58 percent), and children who were healthy (78 percent).
Under the $15 PFPM premium before the increase, for example, the probability of remaining enrolled longer than 12 months is 81 percent for children in the 101-150 percent FPL group compared with 84 percent for children in the 151-200 percent FPL group.
The premium increase from $15 to $20 PFPM was associated with an overall reduction in enrollment length of 47 percent (TR = 1.
When the premium returned to $15 PFPM in October 2003 for children in families between 101-150 percent FPL, their enrollment length recovered somewhat (MEL = 21 months to MEL = 27 months), but remained only approximately one-half of that before the premium increase.
Even in this latter period, however, the MEL of 33 months for these higher-income families remained significantly below the MEL of 61 months under the original $15 PFPM premium.