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. 2010 Sep 21;10:563. doi: 10.1186/1471-2458-10-563

Table 2.

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

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

a Standard deviation

b p - value ≤ 0.05 in bold