Table 1 Characteristics stratified by sex in children aged 8–17 years: NHANES 2013–2018 (n = 1,036)
From: Phthalate exposure and blood pressure in U.S. children aged 8–17 years (NHANES 2013–2018)
Total | 8–12 years | 13–17 years | |||
|---|---|---|---|---|---|
N (%) or mean ± SD | Boys | Girls | Boys | Girls | |
n = 243 | n = 263 | n = 265 | n = 265 | ||
Characteristics | |||||
Age (years) | |||||
12.61 (2.89) | 10.02 (1.38) | 9.99 (1.32) | 15.12 (1.38) | 15.07 (1.42) | |
BMI (kg/m2)a | |||||
Underweight | 42 (4.1) | 19 (7.8) | 20 (7.6) | 0 (0.0) | 13 (4.9) |
Normal | 836 (80.7) | 208 (85.6) | 224 (85.2) | 204 (77.0) | 213 (58.4) |
Overweight | 107 (10.3) | 12 (4.9) | 13 (4.9) | 37 (14.0) | 26 (9.8) |
Obese | 51 (4.9) | 4 (1.7) | 6 (2.3) | 24 (9.0) | 13 (4.9) |
Waist circumference (cm) | |||||
77.85 (15.53) | 71.97 (13.69) | 72.14 (12.77) | 84.78(17.31) | 81.96 (13.53) | |
Race | |||||
Non–Hispanic White | 306 (29.5) | 78 (32.1) | 67 (25.5) | 92 (34.7) | 69 (26.0) |
Non–Hispanic Black | 220 (21.2) | 54 (22.2) | 57 (21.7) | 54 (20.4) | 55 (20.8) |
Mexican American | 245 (23.6) | 56 (3.1) | 69 (26.2) | 57 (21.5) | 63 (23.8) |
Other Race | 265 (25.6) | 55 (22.6) | 70 (26.6) | 62 (23.4) | 78 (29.5) |
Poverty index ratio (PIR) | |||||
Below poverty level (< 1.85) | 606 (58.5) | 133 (54.7) | 167 (63.5) | 145 (54.9) | 161 (60.8) |
Above poverty level (≥ 1.85) | 430 (41.5) | 110 (45.3) | 96 (36.5) | 119 (45.1) | 104 (39.2) |
Serum cotinine level (ng/mL) | |||||
< LOD | 394 (38.0) | 90 (37.0) | 105 (41.5) | 79 (29.8) | 110 (41.5) |
≥ LOD | 642 (62.0) | 153 (63.0) | 148 (58.5) | 186 (70.2) | 155 (58.5) |
NHANES cycles | |||||
2013–2014 | 363 (35.0) | 74 (30.5) | 97 (36.9) | 96 (36.2) | 96 (36.2) |
2015–2016 | 394 (38.0) | 111 (45.7) | 98 (37.3) | 96 (36.2) | 89 (33.6) |
2017–2018 | 279 (27.0) | 58 (23.8) | 68 (25.8) | 73 (27.6) | 80 (30.2) |