In addition to BPSCNWPPL, other questions from the BPSC on the NHIS include:

• Has a hard time in new places (BPSCNWPLCS)

• Has a hard time with change (BPSCCHG)

• Minds being held by other people (BPSCHLOPPL)

• Cries a lot (BPSCCRYALT)

• Has a hard time calming down (BPSCCLMDWN)

• Is fussy or irritable (BPSCFUSSY)

• Is hard to comfort (BPSCMFRT)

• Is hard to keep on a schedule or routine (BPSCSCHD)

• Is hard to put to sleep (BPSCPTSLP)

• Has trouble staying asleep (BPSCSTYSLP)

• Is hard to get enough sleep because of the sample child (BPSCPRLKSL)

The BPSC consists of three subscales: inflexibility, irritability, and difficulty with routines and each response item can be assigned point values of 0 ("not at all"), 1 ("somewhat"), and 2 ("very much"). The codes assigned by IPUMS NHIS staff correspond to the point value for each response item. The 2019 Survey Description states, "As thresholds have not yet been developed to operationalize a categorical variable for the general population, no cut-off scores have been provided." For information on the development and validation of the BPSC, please see Development and Initial Validation of a New Social/Emotional Screening Instrument for Very Young Children.