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Table 2 Impact of the disaster environment on victims’ injuries

From: Factors associated with injuries among tornado victims in Yancheng and Chifeng, China

CategoryGroupingYanchengPChifengP
Total number(%)Number of uninjured(%)Number of injured(%)Total number(%)Number of uninjured(%)Number of injured(%)
IndoorYes80 (85.1)28 (35.0)52 (65.0)0.57265 (97.0)37 (56.9)28 (43.1)1.000a
No14 (14.9)11 (42.9)3 (57.1) 2 (3.0)1 (50.0)1 (50.0) 
Finding refugeYes26 (27.7)17 (65.4)9 (34.6)< 0.0019 (13.4)7 (77.8)2 (22.2)0.313b
No68 (72.3)17 (25.0)51 (75.0) 58 (86.6)31 (53.4)27 (46.6) 
The degree of housing collapseMinor damage4 (4.3)4 (100.0)0 (0.0)< 0.001a3 (4.5)3 (100.0)0 (0.0)< 0.001a
Moderate damage12 (12.8)7 (58.3)2 (41.7) 23 (34.3)18 (78.3)5 (21.7) 
Heavy damage12 (12.8)6 (50.0)6 (50.0) 17 (25.4)12 (70.6)5 (29.4) 
Partially collapsed19 (20.2)10 (52.6)9 (47.4) 14 (20.9)5 (35.7)9 (64.3) 
Completely collapsed47 (50.0)7 (14.9)40 (85.1) 10 (14.9)0 (0.0)10 (100.0) 
House typebungalow75 (79.8)25 (33.3)50 (66.7)0.25567 (100.0)38 (56.7)29 (43.3)——c
build19 (20.2)16 (47.4)3 (52.6) 0 (0.0)0 (0.0)0 (0.0) 
Years in which the house was built70s and before8 (8.5)3 (37.5)5 (62.5)0.3872 (3.0)1 (50.0)1 (50.0)0.636 a
80s44 (46.8)12 (27.3)32 (72.7) 17 (25.4)11 (64.7)6 (35.3) 
90’s27 (28.7)12 (44.4)15 (55.6) 26 (38.8)16 (61.5)10 (38.5) 
After 200015 (16.0)7 (46.7)8 (53.3) 22 (32.8)10 (45.5)12 (54.5) 
Living aloneYes20 (21.3)8 (40.0)12 (60.0)0.6887 (10.5)6 (85.7)1 (14.3)0.217b
No74 (78.7)26 (35.1)48 (64.9) 60 (89.6)32 (53.3)28 (46.7) 
  1. aFisher’s exact probability test
  2. bYates’ continuity correction
  3. cThe sample is too small to calculate a valid P value