Parts 1-2: A list-assisted RDD (Random Digit Dial)
methodology was used to select a nationally representative sample of
telephone households from the GENESYS Sampling System frame.
Typically, a list-assisted RDD design is a one-stage random
selection process resulting in equal probabilities of selection
(EPSEM) design and no clustering, with each household treated as a
Primary Sampling Unit (PSU). A detailed description of the sampling
design is in HOUSEHOLD SURVEY METHODS TECHNICAL REPORT which is
included in this data collection. Part 3: A stratified, two-stage
sample design was applied. In the first stage, 30 Primary Sampling
Units (PSUs) were sampled from a listing of the national universe of
counties and groups of small, adjacent counties. The PSUs were
selected with probability proportionate to the number of children
(aged 0 to 17) according to the 1990 Census. Within the 30 PSUs, a
total of 922 eligible facilities were identified. This frame was
stratified by type of facility, and 75 facilities were sampled with
probability proportionate to size (PPS), using weighted capacity as
the measure of size. Parts 4-6: Nationally representative sample of
400 counties. Counties were selected with probabilities proportional
Parts 1-2: Households with at least one child aged 18 or
younger who had lived in the house for two consecutive weeks in the 12
months prior to screening. Part 3: All group homes, juvenile detention
centers, residential treatment centers, and runaway and homeless youth
shelters serving the selected counties. Parts 4-6: All law enforcement
agencies serving the selected counties.
Parts 4-6: Victim, perpetrator,
Parts 1-3: Youth
Part 1: 35 percent. Part 2: 61 percent. Part 3: The
JFS response rate for the institution-level interview was 100 percent.
A total of 74 facility-level interviews were completed from the 75
sampled facilities. Three of the sampled facilities were found to be
non-operational (hence ineligible), while a fourth sampled facility
actually consisted of three separate juvenile residential facilities,
all of which were included in the study. Thus, all in-scope facilities
participated in the facility-level interviews. The JFS response rate
for the episode-level interview was 93 percent. A total of 116
episode-level interviews were targeted. Episode-level interviews were
successfully completed for 108 of these targeted episodes, yielding a
93 percent completion rate. Parts 4-6: Phase 1 mail survey -- 91
percent, and Phase 2 followup telephone interview -- 99.3 percent.
Overall -- 90.6 percent.