Table 3.
Structured multiphase logistic regression model of demographics, causes of injury and injury episodes associated with multiple injuries (n = 199)
| |
Multiple injuries |
||
|---|---|---|---|
| OR a | 95% CI b | p | |
|
Phase I (Nagelkerke R square = 3.3%, Hosmer and Lemeshow Test
p =
.99) | |||
|
Age |
|
|
.418 |
| ≤ 29 |
1.0 |
|
|
| 30-49 |
.6 |
(.3, 1.3) |
|
| ≥ 50 |
.6 |
(.2, 1.5) |
|
|
Race |
|
|
.098 |
| Chinese |
1.0 |
|
|
| Non-Chinese |
2.1 |
(.9, 4.9) |
|
|
Phase II (Nagelkerke R square = 5.5%, Hosmer and Lemeshow Test
p =
1.0) | |||
|
Relationship with perpetrator |
|
|
.041* |
| Married spouse |
1.0 |
|
|
| Cohabitant |
3.3 |
(1.4, 7.8) |
|
| Boyfriend but non-cohabitant |
1.1 |
(.1, 17.0) |
|
| Ex-husband / ex-boyfriend |
2.1 |
(.4, 11.9) |
|
|
Phase III (Nagelkerke R square = 18.2%, Hosmer and Lemeshow Test
p =
.23) | |||
|
Episode of abuse |
|
|
.894 |
| 1
st
|
1.0 |
|
|
| 2
nd
|
1.5 |
(.5, 4.1) |
|
| Multiple |
1.2 |
(.5, 2.8) |
|
| Undisclosed |
1.3 |
(.5, 3.9) |
|
|
Causes of injury
c
|
|
|
|
| Punching with a fist |
4.0 |
(2.1, 7.5) |
<0.001* |
| Slapping |
1.4 |
(.6, 3.2) |
.377 |
| Pushing, shoving or grabbing |
1.6 |
(.7, 3.7) |
.251 |
| Weapon use |
1.2 |
(.6, 2.5) |
.545 |
| Kicking |
1.2 |
(.5, 3.1) |
.670 |
| Arm or hair twisting |
1.0 |
(.3, 2.9) |
.976 |
| Slamming against a wall |
1.2 |
(.4, 3.7) |
.749 |
| Throwing things |
3.1 |
(.6, 15.0) |
.167 |
|
Admission time |
|
|
.747 |
| Day-time |
1.0 |
|
|
| Night-time | 1.1 | (.6, 2.0) | |
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.