Child care estimates for SIPP 2014 are not comparable to previous estimates from SIPP due to changes in data collection.  Beginning in SIPP 2014 Wave 1, for each type of child care arrangement, the reference parent was asked whether any child living in the household (and in universe for that type of care) regularly used that type of care in a typical week in December 2013, which was up to 6 months before the interview.  If a parent indicated use of a form of child care and had more than one child in universe for that type of care, a follow up question asked them to identify all children using that arrangement.  In previous SIPP panels, the parent was asked about each form of child care used for each individual child in the household.  In addition, the parent was asked about the number of hours the child spent in each arrangement. The reference period for the child care questions was a typical week in the previous month.  High child care use estimates from SIPP 2014 relative to previous years are likely a result of these changes in data collection, rather than an indication of actual changes in child care trends.