Table 232.20.

Percentage distribution of students in grades 9-12, by number of days they reported using alcohol anywhere or on school property during the previous 30 days and selected student characteristics: 2011

[Standard errors appear in parentheses]
Student characteristic	Anywhere (including on school property)1									On school property2
	0 days		1 or 2 days		3 to 29 days		All 30 days			0 days		1 or 2 days			3 to 29 days		All 30 days
1	2		3		4		5			6		7			8		9
Total	61.3	(0.75)	19.4	(0.62)	18.3	(0.47)	0.9		(0.11)	94.9	(0.33)	3.3		(0.23)	1.3	(0.15)	0.5		(0.07)
Sex
Male	60.5	(0.93)	18.5	(0.68)	19.5	(0.65)	1.5		(0.19)	94.6	(0.43)	3.1		(0.26)	1.5	(0.21)	0.8		(0.14)
Female	62.1	(0.91)	20.5	(0.74)	17.1	(0.63)	0.3		(0.08)	95.3	(0.35)	3.4		(0.29)	1.1	(0.16)	0.1	!	(0.04)
Race/ethnicity3
White	59.7	(0.97)	19.5	(0.83)	20.1	(0.62)	0.7		(0.13)	96.0	(0.38)	2.8		(0.29)	0.9	(0.12)	0.3		(0.06)
Black	69.5	(1.40)	17.5	(1.06)	12.1	(0.97)	0.9		(0.21)	94.9	(0.50)	3.2		(0.41)	1.4	(0.28)	0.5	!	(0.18)
Hispanic	57.7	(1.38)	21.5	(0.75)	19.4	(0.94)	1.4		(0.25)	92.7	(0.68)	4.3		(0.31)	2.2	(0.45)	0.7		(0.17)
Asian	74.4	(2.90)	16.7	(2.86)	7.3	(1.42)	1.6	!	(0.73)	96.5	(1.21)	2.2	!	(0.96)	‡	(†)	‡		(†)
Pacific Islander	61.6	(6.40)	15.6	(3.98)	21.9	(4.87)	‡		(†)	91.7	(3.61)	3.6	!	(1.62)	‡	(†)	‡		(†)
American Indian/Alaska Native	55.1	(2.26)	23.8	(2.23)	20.1	(1.51)	‡		(†)	79.1	(4.15)	15.0		(3.14)	5.3	(0.96)	‡		(†)
Two or more races	63.1	(3.08)	19.6	(2.94)	15.0	(1.88)	2.3	!	(0.96)	94.2	(1.32)	3.3		(0.86)	‡	(†)	1.6	!	(0.74)
Grade
9th	70.2	(1.35)	17.8	(0.99)	11.2	(0.95)	0.7		(0.18)	94.6	(0.56)	3.7		(0.41)	1.4	(0.31)	0.4		(0.09)
10th	64.3	(1.37)	19.2	(1.11)	15.8	(0.66)	0.6		(0.15)	95.6	(0.51)	2.8		(0.40)	1.2	(0.24)	0.4		(0.11)
11th	57.3	(1.28)	21.1	(0.87)	20.6	(1.31)	1.1		(0.21)	94.8	(0.56)	3.2		(0.39)	1.3	(0.26)	0.7		(0.16)
12th	51.6	(1.29)	20.1	(0.93)	27.1	(1.25)	1.1		(0.24)	94.9	(0.48)	3.5		(0.38)	1.3	(0.26)	0.3	!	(0.10)

†Not applicable.

!Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.

‡Reporting standards not met. Either there are too few cases for a reliable estimate or the coefficient of variation (CV) is 50 percent or greater.

1 The term "anywhere" is not used in the Youth Risk Behavior Survey (YRBS) questionnaire; students were simply asked how many days during the previous 30 days they had at least one drink of alcohol.

2 In the question about drinking alcohol at school, "on school property" was not defined for survey respondents.

3 Race categories exclude persons of Hispanic ethnicity.

NOTE: Detail may not sum to totals because of rounding.

SOURCE: Centers for Disease Control and Prevention, Division of Adolescent and School Health, Youth Risk Behavior Surveillance System (YRBSS), 2011. (This table was prepared September 2013.)