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Table 1 Demographic characteristics and chi-square test results for 2,816 participant students

From: Epidemiological characteristics and burden of childhood and adolescent injuries: a survey of elementary and secondary students in Xiamen, China

Characteristic All students Injured students (times) Incidence (times) (%) χ 2 P
Sex     12.702 <0.001
 Boys 1382 178 (216) 12.9 (15.6)   
 Girls 1434 125 (149) 8.7 (10.4)   
Grade     12.617 0.006
 1–3 737 61 (67) 8.3 (9.1)   
 4–6 723 81 (100) 11.2 (13.8)   
 7–9 691 96 (117) 13.9 (16.9)   
 10–12 665 65 (81) 9.8 (12.2)   
Residence     8.854 0.012
 Urban 939 78 (90) 8.3 (9.6)   
 Suburban 918 109 (138) 11.9 (15.0)   
 Exurban 959 116 (137) 12.1 (14.3)   
BMI     0.005 0.942
 <24 2448 263 (316) 10.7 (12.9)   
 ≥24 368 40 (49) 10.9 (13.3)   
Personality     14.314 0.001
 Introversive 282 17 (18) 6.0(6.4)   
 Intermediate 1543 154 (153) 10.0(9.9)   
 Extroversive 991 132 (194) 13.3(19.6)   
Number of sibling     7.011 0.008
 0 1631 154 (182) 9.4(11.2)   
 ≥1 1185 149(183) 12.6(15.4)   
Health Status     13.453 0.001
 Good 2144 211(253) 9.8(11.8)   
 Fair 637 83(100) 13.0(15.7)   
 Poor 35 17(12) 25.7(34.3)   
Number of people living together     9.772 0.008
 ≤3 1142 117(143) 10.2(12.5)   
 4–6 1613 172(204) 10.7(12.6)   
 ≥7 61 14(18) 23.0(29.5)   
Father’s educational level     6.110 0.047
 ≤ grade 6 402 51 (61) 12.7(15.2)   
 grade 7–12 1563 179(219) 11.5(14.0)   
 > grade 12 831 72 (84) 8.7(10.1)   
 Missing 20 1 (1) ---   
Mather’s educational level     8.404 0.015
 ≤ grade 6 824 109(140) 13.2(17.0)   
 grade 7–12 1402 144(153) 10.3(10.9)   
 > grade 12 582 50(72) 8.6(12.4)   
 Missing 8 0 ---   
Father’s Occupation     10.839 0.028
 Farmer 175 16(21) 9.1(12.0)   
 Manual labor 592 83(101) 14.0(17.6)   
 White collar 999 94(110) 9.4(11.0)   
 Individual merchant 636 74(89) 11.6(14.0)   
 Others 394 35(43) 8.9(10.9)   
 Missing 20 1(1) ---   
Mother’s Occupation     10.581 0.032
 Farmer 138 12(16) 8.7(11.6)   
 Manual labor 561 76(87) 13.5(15.5)   
 White collar 876 77(92) 8.8(10.5)   
 Individual merchant 440 56(63) 12.7(14.3)   
 Others 793 82(107) 10.3(13.5)   
 Missing 8 0    
Parents’ marital status     9.499 0.002
 Married 2697 280(341) 10.4(12.6)   
 Non-married 119 23(24) 19.3(20.2)   
Household income*     4.390 0.111
 <2000 855 91 (107) 10.6(12.5)   
 2000–3999 920 91 (106) 9.9(11.5)   
 ≥4000 719 94 (117) 13.1(16.3)   
 Missing 322 27 (35) ---   
Total 2861 303 (365) 10.6(12.8)   
  1. *RMB/month.