Introduction
Methods
Overview
Sampling design
Data collection
Response rates
Study variables
Demographic
Parent educational level
Outcome/BMI and overweight status
Physical activity
Sedentary activity
Breakfast consumption
Family meals
Statistical analysis
Results
General characteristics
Numbera (N = 3,315) | %a
| |
---|---|---|
Race/ethnicity | ||
White | 2,135 | 51.4 |
Latino | 827 | 35.0 |
Asian American | 353 | 13.6 |
Age, years | ||
12–13 | 1,113 | 32 |
14–15 | 1,172 | 35.3 |
16–17 | 1,030 | 32.7 |
Gender | ||
Males | 1,694 | 51.2 |
Females | 1,621 | 48.8 |
Overweight | ||
<85th percentile | 2,377 | 72 |
>85th percentile | 938 | 28 |
Parents’ education | ||
<High school | 477 | 21.8 |
High school graduate | 680 | 21.5 |
Some college | 561 | 17.1 |
College degree or higher | 1,597 | 39.6 |
Percentage of federal poverty level | ||
0–99 | 351 | 16.2 |
100–199 | 591 | 21.2 |
200–299 | 410 | 13.2 |
≥300 | 1,963 | 49.4 |
Screen time (computer/television/video games) | ||
≤2 h | 653 | 19.1 |
>2 h | 2,662 | 81 |
Physical activity (60 min/day of moderate activity) | ||
≥3 days/week | 2,453 | 74 |
<3 days/week | 862 | 26 |
Breakfast consumption | ||
Does not eat breakfast every day | 1,598 | 50.3 |
Does eat breakfast every day | 1,717 | 49.7 |
Family meals | ||
Does not eat dinner with parent every night | 1,485 | 44.7 |
Does eat dinner with parent every night | 1,830 | 55.3 |
Continuous variable | ||||||
---|---|---|---|---|---|---|
Hours of sedentary activity | ||||||
Group | Per day | Per weekday | Per weekend day | Days with 60 min of moderate physical activity | Days eats breakfast | Days eats dinner with parents |
Overall | ||||||
Mean | 3.82 | 3.35 | 4.29 | 3.90 | 4.99 | 5.43 |
SE | 0.67 | 0.073 | 0.083 | 0.54 | 0.063 | 0.062 |
CI | 3.69–3.96 | 3.21–3.50 | 4.13–4.46 | 3.79–4.00 | 4.87–5.12 | 5.31–5.60 |
Whites | ||||||
Mean | 3.70 | 4.12 | 5.05 | 5.58 | ||
SE | 0.071 | 0.066 | 0.067 | 0.069 | ||
CI | 3.56–3.84 | 3.99–4.25 | 4.92–5.19 | 5.44–5.72 | ||
Latinos | ||||||
Mean | 3.72 | 3.76 | 4.80 | 5.04 | ||
SE | 0.119 | 0.096 | 0.138 | 0.112 | ||
CI | 3.49–3.96 | 3.56–3.95 | 4.53–5.08 | 4.82–5.26 | ||
Asian Americans | ||||||
Mean | 4.54 | 3.43 | 5.26 | 5.88 | ||
SE | 0.183 | 0.170 | 0.166 | 0.069 | ||
CI | 4.18–4.91 | 3.09–3.76 | 4.93–5.60 | 5.44–5.72 | ||
White girls | ||||||
Mean | 3.47 | 3.73 | 4.92 | 5.45 | ||
SE | 0.086 | 0.091 | 0.112 | 0.097 | ||
CI | 3.30–3.64 | 3.55–3.91 | 4.70–5.15 | 5.26–5.64 | ||
Latina girls | ||||||
Mean | 3.89 | 3.45 | 4.60 | 4.63 | ||
SE | 0.162 | 0.133 | 0.191 | 0.183 | ||
CI | 3.56–4.21 | 3.18–3.71 | 4.22–4.98 | 4.30–4.99 | ||
Asian American girls | ||||||
Mean | 4.11 | 3.31 | 5.40 | 5.90 | ||
SE | 0.2406 | 0.290 | 0.290 | 0.235 | ||
CI | 3.63–4.59 | 2.73–3.89 | 4.80–5.94 | 5.43–6.40 | ||
White boys | ||||||
Mean | 3.92 | 4.50 | 5.18 | 5.70 | ||
SE | 0.095 | 0.081 | 0.101 | 0.085 | ||
CI | 3.73–4.11 | 4.33–4.65 | 4.98–5.38 | 5.53–5.87 | ||
Latino boys | ||||||
Mean | 3.60 | 4.05 | 5.01 | 5.44 | ||
SE | 0.162 | 0.147 | 0.168 | 0.161 | ||
CI | 3.25–3.89 | 3.80–4.35 | 4.67–5.34 | 5.12–5.76 | ||
Asian American boys | ||||||
Mean | 4.94 | 3.53 | 5.20 | 5.86 | ||
SE | 0.285 | 0.240 | 0.231 | 0.217 | ||
CI | 4.37–5.50 | 3.06–4.00 | 4.71–5.63 | 5.43–6.29 |
Girls (n = 1,621, 48.9%) | Boys (n = 1,694, 51.1%) | |||||
---|---|---|---|---|---|---|
Characteristics | White (n = 1,070) | Latina (n = 407) | Asian American (n = 144) | White (n = 1,065) | Latino (n = 420) | Asian American (n = 209) |
Age, years | ||||||
12–13 (n = 1,113, 33.6%) | 316 (30%) | 159 (39%) | 53 (37%) | 350 (33%) | 169 (40%) | 66 (32%) |
(28%) | (36%) | (31%) | (29%) | (39%) | (29%) | |
14–15 (n = 1,172, 35.4%) | 383 (36%) | 136 (33%) | 47 (33%) | 373 (35%) | 157 (37%) | 76 (36%) |
(38%) | (34%) | (35%) | (34%) | (36%) | (35%) | |
16–17 (n = 1,030, 31.1%) | 371 (35%) | 112 (28%) | 44 (31%) | 342 (32%) | 94 (22%) | 67 (32%) |
(34%) | (31%) | (34%) | (37%) | (25%) | (36%) | |
Parents’ education | ||||||
>High school (n = 477, 14.4%) | 43 (4%) | 201 (49%) | 13 (9%) | 27 (3%) | 181 (43%) | 12 (6%) |
(5%) | (54%) | (15%) | (4%) | (50%) | (3%) | |
High school or equivalent (n = 680, 20.5%) | 227 (21%) | 93 (23%) | 24 (17%) | 195 (18%) | 100 (24%) | 41 (20%) |
(23%) | (22%) | (19%) | (21%) | (22%) | (20%) | |
Some college (n = 561, 16.9%) | 229 (21%) | 41 (10%) | 15 (10%) | 196 (18%) | 58 (14%) | 22 (11%) |
(24%) | (9%) | (12%) | (21%) | (12%) | (17%) | |
College degree or higher (n = 1,597, 48.2%) | 571 (53%) | 72 (18%) | 92 (64%) | 647 (61%) | 81 (19%) | 134 (64%) |
(48%) | (15%) | (54%) | (54%) | (16%) | (59%) | |
Percentage of federal poverty level | ||||||
0–99 (n = 351 = 10.6%) | 49 (5%) | 111 (27%) | 19 (13%) | 34 (3%) | 113 (27%) | 25 (12%) |
(5%) | (33%) | (23%) | (4%) | (32%) | (13%) | |
100–199 (n = 591, 17.8%) | 118 (11%) | 145 (36%) | 24 (17%) | 121 (11%) | 149 (36%) | 34 (16%) |
(13%) | (37%) | (19%) | (12%) | (34%) | (15%) | |
200–299 (n = 410, 12.4%) | 149 (14%) | 44 (11%) | 20 (14%) | 122 (12%) | 52 (12%) | 23 (11%) |
(16%) | (9%) | (18%) | (12%) | (12%) | (17%) | |
>300 (n = 1,963, 59.2%) | 754 (71%) | 107 (26%) | 81 (56%) | 788 (74%) | 106 (25%) | 127 (61%) |
(67%) | (20%) | (40%) | (72%) | (22%) | (54%) | |
Screen time (computer/television) | ||||||
≤2 h/day (n = 653, 19.7%) | 248 (23%) | 77 (19%) | 25 (17%) | 193 (18%) | 93 (22%) | 17 (8%) |
(23%) | (17%) | (13%) | (16%) | (28%) | (9%) | |
>2 h/day (n = 2,662, 80.3%) | 822 (77%) | 330 (81%) | 119 (83%) | 872 (82%) | 327 (78%) | 192 (92%) |
(77%) | (83%) | (87%) | (84%) | (72%) | (91%) | |
Physical activity (60 min of moderate physical activity/day) | ||||||
>3 days/week (n = 2,487, 75%) | 804 (75%) | 264 (65%) | 88 (61%) | 874 (82%) | 326 (78%) | 131 (63%) |
(72%) | (66%) | (57%) | (84%) | (74%) | (63%) | |
<3 days/week (n = 828, 25%) | 266 (25%) | 143 (35%) | 56 (39%) | 191 (18%) | 94 (22%) | 78 (37%) |
(28%) | (34%) | (43%) | (16%) | (26%) | (37%) | |
Breakfast consumption | ||||||
0–6 days/week (n = 1,598, 48.2%) | 557 (52%) | 220 (54%) | 59 (41%) | 464 (44%) | 205 (49%) | 93 (45%) |
(53%) | (52%) | (44%) | (46%) | (52%) | (53%) | |
7 days/week (n = 1,717, 51.8%) | 513 (48%) | 187 (46%) | 85 (59%) | 601 (56%) | 215 (51%) | 116 (56%) |
(47%) | (48%) | (56%) | (54%) | (48%) | (47%) | |
Family meals | ||||||
0–6 days/week (n = 1,485, 44.8%) | 522 (49%) | 197 (48%) | 49 (34%) | 475 (45%) | 169 (40%) | 76 (36%) |
(48%) | (55%) | (29%) | (44%) | (42%) | (34%) | |
7 days/week (n = 1,830, 55.2%) | 548 (51%) | 213 (52%) | 95 (66%) | 590 (55%) | 251 (60%) | 133 (64%) |
(52%) | (45%) | (71%) | (56%) | (58%) | (66%) | |
Body mass index | ||||||
<85th percentile (n = 2,464, 74.4%) | 875 (82%) | 272 (67%) | 138 (96%) | 787 (74%) | 247 (59%) | 148 (71%) |
(82%) | (66%) | (96%) | (69%) | (59%) | (73%) | |
>85th percentile (n = 850, 25.6%) | 197 (18%) | 135 (33%) | 6 (4%) | 278 (26%) | 173 (41%) | 61 (29%) |
(18%) | (34%) | (4%) | (31%) | (41%) | (27%) |
Prevalence of overweight by sex and ethnicity
Dependent variable | |||
---|---|---|---|
Independent variable | Not overweight, <85th percentile | Overweight, >85th percentile | p (from χ2 Test) |
Gender | <0.001 | ||
Male | 1,182 (70%) | 512 (30%) | |
(66%, 0.017, 0.625–0.691) | (34%, 0.017, 0.309–0.375) | ||
Female | 1,283 (79%) | 338 (21%) | |
(78%, 0.013, 0.755–0.807) | (22%, 0.013, 0.193–0.245) | ||
Ethnicity | <0.001 | ||
White | 1,660 (78%) | 475 (22%) | |
(75.1%, 0.013, 0.725–0.776) | (25%, 0.013, 0.224–0.276) | ||
Latino | 519 (63%) | 308 (37%) | |
(63%, 0.022, 0.581–0.667) | (37.5%, 0.022, 0.333–0.419) | ||
Asian American | 286 (81%) | 67 (19%) | |
(84%, 0.025, 0.784–0.883) | (16%, 0.025, 0.117–0.216) | ||
Age, years | 0.05 | ||
12–13 | 804 (72%) | 309 (28%) | |
(68.2%, 0.019, 0.643–0.720) | (32%, 0.020, 0.280–0.357) | ||
14–15 | 865 (74%) | 307 (26%) | |
(74%, 0.015, 0.708–0.768) | (26%, 0.015, 0.232–0.292) | ||
16–17 | 796 (77%) | 234 (23%) | |
(73.2%, 0.018, 0.695–0.767) | (27%, 0.018, 0.233–0.305) | ||
Physical activity | 0.77 | ||
Meets standard >3 days/week | 1,873 (75.3%) | 614 (24.7%) | |
(72%, 0.013, 0.700–0.750) | (28%, 0.013, 0.255–0.305) | ||
Does not meet standard | 592 (72%) | 236 (29%) | |
(71.3%, 0.02, 0.670–0.750) | (29%, 0.022, 0.250–0.331) | ||
Sedentary activity | 0.27 | ||
Meets standard <2 h/day | 510 (78%) | 143 (22%) | |
(75%, 0.027, 0.691–0.796) | (25.3%, 0.027, 0.204–0.310) | ||
Does not meet standard | 1,955 (73%) | 707 (27%) | |
(71%, 0.012, 0.689–0.735) | (29%, 0.012, 0.265–0.311) | ||
Breakfast consumption | <0.005 | ||
Yes | 1,340 (78%) | 377 (22%) | |
(75.1%, 0.014, 0.721–0.778) | (25%, 0.014, 0.222–0.279) | ||
No | 1,125 (70%) | 473 (30%) | |
(69%, 0.016, 0.656–0.718) | (31.2%, 0.016, 0.282–0.344) | ||
Family meals | 0.33 | ||
Yes | 1,354 (74%) | 476 (26%) | |
(73%, 0.013, 0.701–0.754) | (27%, 0.013, 0.246–0.299) | ||
No | 1,111 (75%) | 374 (25%) | |
(71%, 0.020, 0.674–0.739) | (29.2%, 0.016, 0.261–0.326) | ||
Parents’ educational level | <0.001 | ||
<High school | 292 (61%) | 185 (39%) | |
(62%, 0.028, 0.568–0.678) | (38%, 0.028, 0.322–0.432) | ||
High school graduate | 460 (68%) | 220 (32%) | |
(66%, 0.023, 0.610–0.701) | (34%, 0.023, 0.299–0.390) | ||
Some college | 419 (75%) | 142 (25%) | |
(73%, 0.03, 0.662–0.781) | (27%, 0.03, 0.219–0.338) | ||
College degree or higher | 1,294 (81%) | 303 (19%) | |
(80.1%, 0.011, 0.778–0.823) | (20%, 0.011, 0.177–0.222) | ||
% of federal poverty level | <0.001 | ||
0–99 | 227 (65%) | 124 (35%) | |
(64%, 0.036, 0.564–0.706) | (36%, 0.036, 0.294–0.436) | ||
100–199 | 378 (64%) | 213 (36%) | |
(66%, 0.254, 0.612–0.713) | (34%, 0.025, 0.288–0.388) | ||
200–299 | 303 (73.9%) | 107 (26.1%) | |
(72%, 0.032, 0.648–0.776) | (28%, 0.032, 0.224–0.352) | ||
>300 | 1,557 (79%) | 406 (21%) | |
(77%, 0.013, 0.744–0.794) | (23%, 0.013, 0.206–0.256) |
Factors associated with overweight
Odds ratio | SE | t | p | 95% CI | |
---|---|---|---|---|---|
Overall sample variable | |||||
A. Predicting likelihood of overweight adolescents | |||||
Physical activity | 1.03 | 0.15 | 0.19 | 0.85 | |
Screen time | 1.27 | 0.20 | 1.54 | 0.13 | |
Breakfast consumption | 0.75 | 0.09 | -2.42 | 0.02 | 0.589–0.950 |
Family meals | 0.93 | 0.11 | -0.58 | 0.6 | |
Gender | 2.03 | 0.24 | 6.02 | <0.001 | 1.609–2.570 |
Age | 0.87 | 0.06 | -2.01 | 0.048 | 0.766–0.999 |
Parents’ educational level | 0.76 | 0.05 | -4.53 | <0.001 | 0.669–0.855 |
Poverty level | 0.90 | 0.07 | -1.35 | 0.18 | |
Race | 0.83 | 0.08 | -1.92 | 0.06 | |
Group/significant factors | |||||
B. Summary table by gender and ethnicity | |||||
White girls (n = 1,070) | |||||
% Federal poverty level | 0.68 | 0.08 | -3.11 | 0.003 | 0.528–0.869 |
0–99 vs ≥300 | 2.45 | 1.08 | 2.02 | 0.047 | 1.010–5.900 |
100–199 vs ≥300 | 2.73 | 1.01 | 2.72 | 0.008 | 1.310–5.700 |
200–299 vs ≥300 | 1.56 | 0.50 | 1.40 | 0.73 | 0.436–1.790 |
Latina girls (n = 407) | |||||
Parents’ educational level <high school vs college or more | 0.13 | 0.09 | -2.85 | 0.006 | 0.031–0.537 |
Asian American girls (n = 144) | |||||
Parents’ educational level | 2.97 | 1.23 | 2.62 | 0.01 | 1.300–6.780 |
White boys (n = 1,065) | |||||
Screen time | 2.28 | 0.56 | 3.38 | 0.001 | 1.405–3.710 |
Parents’ educational level < high school vs college or more | 0.26 | 0.17 | -2.06 | 0.04 | 0.070–0.950 |
High school/diploma vs college or more | 2.10 | 0.53 | 2.94 | 0.004 | 1.270–3.470 |
Latino boys (n = 420) | |||||
Parents’ educational level high school/diploma vs college or more | 2.60 | 1.11 | 2.24 | 0.03 | 1.110–6.080 |
Multivariate logistic regression by ethnicity and gender
Univariate logistic regression
Independent variable | Odds ratio |
p*
| Lower bound | Upper bound |
---|---|---|---|---|
Male vs female | 1.86 | <0.001 | 1.490 | 2.300 |
Ethnicity | ||||
White vs Latino | 1.81 | <0.001 | 1.418 | 2.310 |
White vs Asian American | 0.58 | 0.01 | 0.382 | 0.873 |
Physical activity recommendations met | 1.04 | 0.08 | ||
Screen time recommendations met | 1.20 | 0.27 | ||
Breakfast consumption | 0.73 | 0.006 | 0.588 | 0.910 |
Family meals | 0.90 | 0.33 | ||
Age, years | 1.86 | <0.001 | 1.490 | 2.320 |
12–13 vs 14–15 | 0.76 | 0.02 | 0.599 | 0.650 |
12–13 vs 16–17 | 0.79 | 0.06 | ||
Adult education | 0.76 | <0.001 | 0.669 | 0.855 |
<High school vs high school/diploma | 0.87 | 0.37 | ||
<High school vs some college | 0.63 | 0.02 | 0.423 | 0.937 |
<High school vs college or higher | 0.42 | <0.001 | 0.309 | 0.548 |
% of federal poverty level | 0.80 | <0.001 | 0.716 | 0.889 |
0–99 vs ≥300 | 1.32 | 0.11 | ||
100–199 vs ≥300 | 1.69 | <0.001 | 1.300 | 2.200 |
200–299 vs ≥300 | 1.89 | 0.001 | 1.300 | 2.760 |