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Table 1

Means and proportions for study variables, by analytic sample

Full SampleFixed-Effects Sample
VariableMean/%SDMean/%SDMin.Max.
Home Neighborhood Measures       
 Tract concentrated disadvantage 0.00 1.00 0.02 0.79 −1.15 3.07 
 Tract proportion Black .32 .30 .31 .26 0.00 0.91 
 Tract collective efficacy 0.00 1.00 −0.12 0.86 −2.51 1.73 
 Tract violent crime rate 18.88 18.90 20.43 18.48 0.00 94.72 
 Block group population density 5,241.90 2,933.05 5,523.58 2,940.54 323.58 17,947.28 
Nonhome Exposure Measures       
 Nonhome concentrated disadvantage 0.00 1.00 0.09 0.97 −1.58 4.49 
 Nonhome proportion Black .25 .24 .26 .22 0.00 0.94 
 Nonhome collective efficacy 0.00 1.00 −0.14 0.93 −2.88 2.24 
 Nonhome violent crime rate 6.67 6.49 7.38 6.15 0.00 47.96 
Adolescent Measures       
 Total nonhome time (minutes) 1,758.91 930.42 1,707.94 940.52 5,318 
 Black (vs. White) .48  .51  
 Foreign-born .02  .02  
 Age 14.30 1.86 14.20 1.85 11 17 
 Male .46  .46  
Family Controls       
 Household size 4.65 1.61 4.63 1.60 16 
 Parent age 45.43 8.55 44.84 8.86 18 81 
 Parent male .12  .12  
Household Income       
 ≤$30,000  .37  .40  
 $30,001–$60,000 .24  .26  
 ≥$60,001  .40  .34  
Parent Education       
 <High school .05  .06  
 High school/GED .16  .17  
 Some college .36  .42  
 College degree .25  .21  
 Graduate/professional degree .18  .15  
Parent Marital Status       
 Married .53  .49  
 Cohabiting .10  .12  
 Single .20  .21  
 Other .17  .18  
Residence Owned (vs. rented) .61  .57  
Years Lived in Current Neighborhood 12.10 10.23 11.34 9.69 62 
Moved in Last Two Years .16  .16  
Season       
 Winter (December–February) .23  .24  
 Spring (March–May) .23  .22  
 Summer (June–August) .29  .28  
 Autumn (September–November) .26  .26  
Number of Weekend Days       
 0 .02  .02  
 1 .03  .04  
 2 .95  .95  
N: Individual Level 1,180 674   
Full SampleFixed-Effects Sample
VariableMean/%SDMean/%SDMin.Max.
Home Neighborhood Measures       
 Tract concentrated disadvantage 0.00 1.00 0.02 0.79 −1.15 3.07 
 Tract proportion Black .32 .30 .31 .26 0.00 0.91 
 Tract collective efficacy 0.00 1.00 −0.12 0.86 −2.51 1.73 
 Tract violent crime rate 18.88 18.90 20.43 18.48 0.00 94.72 
 Block group population density 5,241.90 2,933.05 5,523.58 2,940.54 323.58 17,947.28 
Nonhome Exposure Measures       
 Nonhome concentrated disadvantage 0.00 1.00 0.09 0.97 −1.58 4.49 
 Nonhome proportion Black .25 .24 .26 .22 0.00 0.94 
 Nonhome collective efficacy 0.00 1.00 −0.14 0.93 −2.88 2.24 
 Nonhome violent crime rate 6.67 6.49 7.38 6.15 0.00 47.96 
Adolescent Measures       
 Total nonhome time (minutes) 1,758.91 930.42 1,707.94 940.52 5,318 
 Black (vs. White) .48  .51  
 Foreign-born .02  .02  
 Age 14.30 1.86 14.20 1.85 11 17 
 Male .46  .46  
Family Controls       
 Household size 4.65 1.61 4.63 1.60 16 
 Parent age 45.43 8.55 44.84 8.86 18 81 
 Parent male .12  .12  
Household Income       
 ≤$30,000  .37  .40  
 $30,001–$60,000 .24  .26  
 ≥$60,001  .40  .34  
Parent Education       
 <High school .05  .06  
 High school/GED .16  .17  
 Some college .36  .42  
 College degree .25  .21  
 Graduate/professional degree .18  .15  
Parent Marital Status       
 Married .53  .49  
 Cohabiting .10  .12  
 Single .20  .21  
 Other .17  .18  
Residence Owned (vs. rented) .61  .57  
Years Lived in Current Neighborhood 12.10 10.23 11.34 9.69 62 
Moved in Last Two Years .16  .16  
Season       
 Winter (December–February) .23  .24  
 Spring (March–May) .23  .22  
 Summer (June–August) .29  .28  
 Autumn (September–November) .26  .26  
Number of Weekend Days       
 0 .02  .02  
 1 .03  .04  
 2 .95  .95  
N: Individual Level 1,180 674   
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