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Table 2 Comparisons of demographic, ICIAIs and psychosocial variables between boys and girls

From: Does Chinese culture influence psychosocial factors for heroin use among young adolescents in China? A cross-sectional study

  Boys (n = 220)
Mean (SDa) or N (%)
Girls (n = 241)
Mean (SD) or N (%)
P - valueb
Age 14.90 (0.84) 14.87 (0.72) 0.77
Grade    
   Seventh 88 (40) 79 (33) 0.10
   Eighth 130 (60) 160 (67)  
Ethnicity    
   Han 174 (79) 191 (79) 0.97
   Zhuang and others 46 (21) 50 (21)  
Family ICIAI 3.56 (0.71) 3.77 (0.64) <0.01
Friend ICIAI 3.19 (0.62) 3.39 (0.60) <0.01
Classmate ICIAI 2.64 (0.60) 2.84 (0.67) <0.01
Favorable attitude towards heroin use 3.49 (3.16) 2.33 (2.51) <0.01
Perceived behavioral control 26.31 (4.48) 27.08 (3.15) 0.04
Descriptive norms of heroin used by family members
   No 219 (100) 233 (97) 0.01
   Yes 0 (0) 8 (3)  
Descriptive norms of heroin used by villagers
   No 98 (45) 84 (35) 0.03
   Yes 121 (55) 156 (65)  
Descriptive norms of heroin used by classmates
   No 216 (98) 237 (98) 1.00
   Yes 4 (2) 4 (2)  
Subjective norms (perceived encouragement of heroin use by family members)
   No 217 (100) 241 (100)  
   Yes 0 (0) 0 (0)  
Subjective norms (perceived encouragement of heroin use by classmates)
   No 216 (99) 239 (100) 0.61
   Yes 2 (1) 1 (0)  
Perceived peer control 12.93 (3.03) 14.93 (2.26) <0.01
Communication with parents about heroin use
  29.90 (4.28) 31.39 (4.34) <0.01
  1. a Standard deviation
  2. b p - value ≤ 0.05 in bold