Student public commitment in a school-based diabetes prevention project: impact on physical health and health behavior

Table 2 Baseline Measures by Participant Group

	Overall (N = 4603)				Baseline BMI ≥ 85^thpercentile (N = 2292)
	PC (N = 835)	NPC (N = 1472)	Control (N = 2296)		PC (N = 392)	NPC (N = 768)	Control (N = 1132)
	Mean (SD) or %	Mean (SD) or %	Mean (SD) or %	p-value	Mean (SD) or %	Mean (SD) or %	Mean (SD) or %	p-value
Student Characteristics
Age in years, M (SD)	11.2 (0.5)	11.3 (0.5)	11.3 (0.5)	0.08	11.2 (0.5)	11.2 (0.5)	11.3 (0.6)	0.14
% male¹	41.4%	50.7%	47.1%	< 0.001	47.2%	52.2%	50.4%	0.24
Race/Ethnicity				0.58				0.40
Hispanic	51.0%	57.0%	53.5%		53.8%	60.7%	56.7%
Black	22.5%	19.1%	15.7%		19.9%	17.7%	16.2%
White	18.6%	16.2%	21.6%		17.9%	14.3%	18.6%
Other	7.9%	7.7%	9.2%		8.4%	7.3%	8.5%
BMI Percentile, M (SD)	71.5 (28.1)	74.1 (27.5)	72.3 (28.6)	0.08	94.9 (4.1)	95.1 (4.0)	95.1 (4.1)	0.66
BMI ≥ 95^th Percentile	27.8%	31.4%	30.4%	0.20	59.2%	60.2%	61.7%	0.61
Waist Circumference ≥90^th Percentile	28.0%	30.3%	28.6%	0.47	59.3%	57.7%	57.7%	0.92
Family Characteristics
Highest Household Education³				0.25				0.28
≤ HS Graduate	48.7%	53.6%	51.5%		49.1%	56.5%	54.9%
≥ Some College	51.3%	46.4%	48.5%		51.0%	43.5%	45.1%
Positive Reported Family History of Diabetes	14.5%	11.4%	13.4%	0.08	18.9%	14.2%	17.7%	0.07
Student Health Behaviors
Fruits and Vegetables (servings/day), M (SD)⁴	2.6 (2.3)	2.7 (2.4)	2.8 (2.6)	0.64	2.6 (2.2)	2.6 (2.3)	2.8 (2.6)	0.37
Added Sugar Beverages (oz/day), M (SD)⁴	11.5 (14.4)	11.1 (13.2)	10.8 (12.4)	0.97	10.9 (13.4)	11.1 (13.4)	10.2 (11.9)	0.65
Fitness (# of laps), M (SD)^7,8	22.2 (12.2)	20.4 (11.6)	21.4 (12.3)	0.0043	17.2 (9.8)	16.0 (8.5)	16.1 (8.3)	0.15

PC = group of intervention school students engaged in public commitment activities, NPC = group of intervention students not engaged in public commitment activities
¹ For overall sample, analyses of % male: PC vs. NPC, p = < 0.001; PC vs. Control, p = 0.02; NPC vs. Control, p = 0.09
² "Other" race/ethnicity not used in the analysis;
³ N = 4471 for overall analyses and N = 2236 for BMI ≥ 85^th percentile subgroup due to missing data;
⁴ N = 3908 for overall analyses and N = 1937 for BMI ≥ 85^th percentile subgroup due to missing data; ⁵adjusted for gender;
⁶Square root transformation used for analysis
⁷ N = 4157 for overall analyses and N = 2069 for BMI ≥ 85^th percentile subgroup due to missing data;
⁸ For overall sample, analyses of fitness: PC vs. NPC, p = 0.001; PC vs. Control, p = 1.00; NPC vs. Control, p = 0.377

ISSN: 1471-2458