Table 4

Distribution of building characteristics and risk of injury using location and age and gender matched controls

Location matched controls*Age/gender matched controls†
CharacteristicCasesControlsOR95% CIControlsOR95% CI
*Controlled for age and gender. Model fit was assessed using likelihood ratio tests. All models had χ2 >70.9 and p values <0.0001.
†Controlled for modified Mercalli intensity scale and peak ground acceleration. Model fit was assessed using likelihood ratio tests. All models had χ2 >30.9 and p values <0.0001.
CI, confidence interval; N/A, not applicable; OR, odds ratio.
Building type
    Residential single unit45 (43.7)70 (68.0)175 (72.8)1
    Residential multiple unit47 (45.6)29 (28.2)3.81.7 to 9.724 (23.3)2.91.2 to 8.3
    Commercial/other11 (10.7)4 (3.9)6.41.4 to 47.64 (3.9)6.91.3 to 49.5
Building date
    Built before 195022 (21.4)19 (18.4)138 (36.9)1
    Built 1950–6940 (38.9)66 (64.1)0.40.1 to 0.946 (44.7)0.80.3 to 2.1
    Built 1970 or later41 (39.8)18 (17.5)1.90.7 to 5.219 (18.4)2.80.9 to 10.6
Damaged
    No79 (76.7)97 (94.2)1101 (98.1)
    Yes24 (23.3)6 (5.8)8.52.4 to 56.72 (1.9)N/AN/A