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. Author manuscript; available in PMC: 2013 Jul 16.
Published in final edited form as: Q J Econ. 2011;126(1):103–143. doi: 10.1093/qje/qjr001

Table I.

Summary Statistics for Intimate Partner Violence, NIBRS data, 1995–2006.

Intimate Partner Violence Daily Rate for the hours of
12 PM to 11:59 PM
Per 100,000 Population
Fraction in Category
or Subcategory
A. Sundays During Regular Football Season
Location and Victim-Offender Relationship
  All Intimate Partner Violence 1.28 1.00
   Male on Female 1.04 .81
    Occurring at Home .85 .82
      Against Wife .46 .54
      Against Girlfriend .39 .46
    Occurring Away from Home .19 .18
   Female on Male .24 .19
    Occurring at Home .19 .79
    Occurring Away from Home .05 .21
B. Sundays During Regular Football Season, Male on Female, Occurring at Home
Time of Day (all times Eastern Time)
  12 PM to 2:59 PM .16 .19
  3 PM to 5:59 PM .18 .22
  6 PM to 8:59 PM .25 .29
  9 PM to 11:59 PM .25 .30
Alcohol Use and Assault Severity
  Alcohol Involved .17 .20
  Minor Assault .41 .48
  Serious Assault .44 .52
Agency Size
  Smaller Cities or Counties (pop<50K) .89 .47
  Larger Cities or Counties (pop≥50K) .73 .53
Age
  Younger Offenders (age<30) .32 .38
  Older Offenders (age≥30) .52 .61

Notes: Data are reports of intimate partner violence to local police agencies in the National Incident-Based Reporting System (NIBRS) for the states and years listed in Table 2. Intimate partner is defined as a spouse (including common law and ex-spouse) or a boyfriend/girlfriend. Violence is defined as aggravated assault, simple assault, or intimidation. Alcohol involved indicates the reporting officer noted that either alcohol or drugs were a contributing factor. Minor assault is simple assault or intimidation without injury; serious assault is aggravated assault or any assault with a physical injury. Category fractions for agency size are weighted by the average population in smaller versus larger cities and counties.