Appendix Table. Wording of National Survey of Children’s Health, by Survey Administration Year.

Variable	Administration year(s)	Survey question
Mental, behavioral, and developmental disorder
Attention deficit/hyperactivity disorder	2016–2021	Has a doctor or other health care provider ever told you that this child has [specified disorder]?
Anxiety problems
Depression
Tourette syndrome
Autism spectrum disorder
Behavioral and conduct problems	2016–2021	Has a doctor, other health care provider, or educator ever told you that this child has (specified disorder)?
Developmental delay
Intellectual disability
Learning disability
Speech or other language disorder
Health care and receipt of services
Lacked preventive medical care, last 12 months	Composite of:
	2016–2017, 2019–2021	During the past 12 months, did this child see a doctor, nurse, or other health care professional for sick-child care, well-child check-ups, physical exams, hospitalizations, or any other kind of medical care?
	Or
	2018	During the past 12 months, did this child see a doctor, nurse, or other health care professional for medical care (for example, preventive care, sick care, hospitalizations)?a
	And
	2016–2021	During the past 12 months, how many times did this child visit a doctor, nurse, or other health care professional to receive a preventive check-up? A preventive check-up is when this child was not sick or injured.
Unmet health care needs, last 12 months	2016–2021	During the past 12 months, was there any time when this child needed health care but it was not received? Health care includes medical care, dental care, vision care, and mental health services.
Health insurance adequacy	2016–2021	Composite of: During the past 12 months was this child ever covered by any kind of health insurance or health coverage plan? How often does this child’s health insurance offer benefits or cover services that meet this child’s needs? How often does this child’s health insurance allow them to see the health care providers theyb need? How often are [out-of-pocket medical or health-related] costs reasonable?
Received mental and/or developmental services, last 12 months	2016–2021	Composite of: Has this child ever had a special education or early intervention plan? Children receiving these services often have an Individualized Family Service Plan or Individualized Education Plan. Is this child currently receiving services under one of these plans? Has this child ever received special services to meet theirb developmental needs such as speech, occupational, or behavioral therapy? Is this child currently receiving these special services? During the past 12 months, has this child received any treatment or counseling from a mental health professional? Mental health professionals include psychiatrists, psychologists, psychiatric nurses, and clinical social workers. At any time during the past 12 months, did this child receive behavioral treatment for ADD or ADHD, such as training or an intervention that you or this child received to help with theirb behavior? At any time during the past 12 months, did this child receive behavioral treatment for autism, autism spectrum disorder (ASD), Asperger Disorder or Pervasive Development Disorder (PDD), such as training or an intervention that you or this child received to help with theirb behavior?
Received special education or intervention services, last 12 months	2016–2021	Composite of: Has this child ever had a special education or early intervention plan? Children receiving these services often have an Individualized Family Service Plan or Individualized Education Plan. Is this child currently receiving services under one of these plans?
Parent and family well-being
≥1 parent with fair/poor mental health	Composite of
	2016–2021	In general, how is your mental or emotional health?
	And
	2016–2017	In general, how is Adult 2's mental or emotional health? Or
	Or
	2018	In general, how is this primary caregiver's [caregiver 2] mental or emotional health?
	Or
	2019	In general, how is Caregiver 2’s mental or emotional health?
	Or
	2020–2021	In general, how is this caregiver’s [caregiver 2] mental or emotional health?
Household economic stress, lifetime	2016–2017	Since this child was born, how often has it been very hard to get by on your family's income - hard to cover the basics like food or housing?c
	2018–2021	Since this child was born, how often has it been very hard to cover the basics, like food or housing, on your family’s income?
Community support and safety
Lacking neighborhood support	2016–2021	Composite of: To what extent do you agree with these statements about your neighborhood or community: People in this neighborhood help each other out. We watch out for each other's children in this neighborhood. When we encounter difficulties, we know where to go for help in our community.
Lacking perceived neighborhood safety	2016–2021	To what extent do you agree with these statements about your neighborhood or community: This child is safe in our neighborhood.

^a Data for lack of preventive medical care for 2018 are not included in the analysis because of different question wording for that year.

^b From 2016–2019, he or she/his or her pronouns were used for these questions; beginning in 2020, they/their pronouns were used.

^c Data for household economic stress for 2016 and 2017 are not included in analyses due to different question wording for those years.