Table 1

 Descriptive summary of the study neighbourhoods and their residents

Neighbourhoods n (%)Participants n (%)
*One neighbourhood (nine subjects) could not be classified because no homicides were reported. †Two neighbourhoods (two subjects) could not be classified because no suicides were reported.
Age
    15–18505 (60)
    19–22332 (40)
Sex
    Female429 (51)
    Male408 (49)
Race/ethnicity
    White (non-Hispanic)134 (16)
    African American270 (32)
    Hispanic327 (39)
    Other106 (13)
Racial/ethnic composition of neighbourhoods
    Predominantly white37 (22)168 (20)
    Predominantly African American56 (33)194 (23)
    Predominantly Hispanic26 (15)153 (18)
    Mixed51 (30)322 (38)
% Homicides in neighbourhood committed w/gun*
    0–6044 (26)224 (27)
    61–7033 (20)156 (19)
    71–8047 (28)234 (28)
    >8045 (27)214 (26)
% Suicides in neighbourhood committed w/gun†
    0–2037 (22)184 (22)
    21–4057 (34)303 (36)
    41–6040 (24)184 (22)
    >6034 (20)164 (20)