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Table 2 Structured multiphase logistic regression model of demographics, causes of injury and injury episodes associated with head, neck, and face injuries (n = 199)

From: Patterns, aetiology and risk factors of intimate partner violence-related injuries to head, neck and face in Chinese women

  Head, neck, and face injuries
  ORa 95% CIb p
Phase I (Nagelkerke R square = 0.6%, Hosmer and Lemeshow Test p =.92)
Age    .856
≤ 29 1.0   
30-49 1.2 (.5, 2.8)  
≥ 50 .9 (.3, 2.7)  
Race    .989
Chinese 1.0   
Non-Chinese 1.0 (.4, 2.7)  
Phase II (Nagelkerke R square = 1.2%, Hosmer and Lemeshow Test p =1.0)
Relationship with perpetrator    .604
Married spouse 1.0   
Cohabitant 1.6 (.6, 4.6)  
Boyfriend but non-cohabitant .3 (0, 4.8)  
Ex-husband / ex-boyfriend 1.5 (.2, 13.0)  
Phase III (Nagelkerke R square = 15.1%, Hosmer and Lemeshow Test p =.28
Episode of abuse    .8
1 st 1.0   
2 nd 1.1 (.3, 4.1)  
Multiple .7 (.3, 2.0)  
Undisclosed .6 (.2, 2.3)  
Causes of injury c    
Punching with a fist 2.4 (1.2, 5.1) .013*
Slapping 2.6 (.8, 8.3) .097
Pushing, shoving or grabbing 1.0 (.4, 2.7) .930
Weapon use .8 (.4, 1.9) .688
Kicking .3 (.1, .7) .01*
Arm or hair twisting .5 (.2, 1.6) .248
Slamming against a wall 2.1 (.4, 10.4) .381
Throwing things 1.2 (.2, 6.4) .835
Admission time    .429
Day-time 1.0   
Night-time 0.8 (.4, 1.5)  
  1. Note: aOR refers to odds ratio; bCI refers to confidence interval; Causes of injury; cThe comparators are “no punching with a fist”, “no slapping”, “no pushing, shoving or grabbing”, “no weapon use”, “no kicking”, “no arm or hair twisting”, “no slamming against a wall”, “no throwing things” respectively; *p < 0.05; Tolerance > 0.9 and VIF < 1.1.