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Table 2 Sociodemographic characteristics by behavior pattern, 2012

From: Type A personality, hostility, time urgency and unintentional injuries among Chinese undergraduates: a matched case–control study

Characteristic Behavior pattern Test statistic
  B(n = 111) mB(n = 242) M(n = 31) mA(n = 107) A(n = 15) ( P-value)*
Age (year) 19.60 ± 1.06 19.66 ± 1.14 19.81 ± 1.33 19.48 ± 1.20 19.80 ± 1.42 0.77(0.545)
BM I(kg/m2) 20.21 ± 1.88 20.39 ± 2.74 21.18 ± 3.12 19.91 ± 2.18 19.69 ± 2.12 1.99(0.094)
Gender (male, %) 43(38.7) 129(53.3) 17(54.8) 49(45.8) 8(53.3) 7.42(0.115)
Major (medicine, %) 57(51.4) 156(64.5) 19(61.3) 74(69.2) 8(53.3) 8.78(0.067)
Sports (yes, %) 72(64.9) 174(71.9) 20(64.5) 71(66.4) 9(60.0) 2.93(0.570)
Club activities (yes, %) 65(58.6) 157(64.9) 20(64.5) 58(54.2) 9(60.0) 4.05(0.399)
Only child (yes, %) 57(51.4) 91(37.6) 7(22.6) 47(43.9) 7(46.7) 10.95(0.027)
Smoke (yes, %) 2(1.8) 7(2.9) 1(3.2) 5(4.7) 1(6.7) - (0.492)
Drink (yes, %) 1(0.9) 11(4.5) 0(0.0) 3(2.8) 3(20.0) - (0.017)
Annual per-capita income, Yuan       - (0.895)
<2000 12(10.8) 27(11.2) 6(19.4) 12(11.2) 3(20.0)  
2000 ~ 10000 32(28.8) 62(25.6) 9(29.0) 27(25.2) 2(13.3)  
10000 ~ 30000 31(27.9) 77(31.8) 7(22.6) 32(29.9) 7(46.7)  
30000 ~ 50000 16(14.4) 37(15.3) 5(16.1) 19(17.8) 0(0.00)  
> 50000 20(18.0) 39(16.1) 4(12.9) 17(15.9) 3(20.0)  
  1. *. P value from F test (age, BMI), Chi_squared test (gender, major, sports, club activities, only child), Fisher’s exact test (smoke, drink, and income).