Table 3:
Prevalence of the metabolic syndrome or abdominal obesity among children and adolescents in Yazd district, Iran, 2016–17
| Variable | N of valid cases (excluding missing) | N (%) of subjects with MetS# | P (Chi-Square test) | N of valid cases (excluding missing) | N (%) of subjects with abdominal obesity¶ | P (Chi-Square test) | ||
|---|---|---|---|---|---|---|---|---|
| < 10 years | sex | Male | 155 | - | 152 | 20 (13.2) | 0.006 | |
| Female | 231 | - | 231 | 57(24.7) | ||||
| Total | 386 | - | 383 | 77(20.1) | ||||
| 10years ≤ | sex | Male | 278 | 26(9.4) | 0.1 | 290 | 101(34.8) | 0.2 |
| Female | 317 | 19(6.0) | 325 | 99(30.5) | ||||
| Total | 595 | 45(7.6) | 615 | 200(32.5) | ||||
| < 10 years | BMI percentile* | Normal (<85th) | 238 | - | 238 | 3(1.3) | ≤0.001 | |
| At risk (85th to <95th) | 65 | - | 66 | 12(18.2) | ||||
| Overweight (95th ≤) | 77 | - | 79 | 62(78.5) | ||||
| total | 380 | 383 | 77(20.1) | |||||
| 10 years ≤ | BMI percentile* | Normal (<85th) | 357 | 0(0.0) | ≤0.001 | 362 | 18(5) | ≤0.001 |
| At risk (85th to <95th) | 100 | 10(10) | 111 | 60(54.1) | ||||
| Overweight (95th ≤) | 130 | 35(26.9) | 142 | 122(85.5) | ||||
| total | 587 | 45(7.7) | 615 | 200(32.5) | ||||
| < 10 years | BMI percentile† | Normal (<85th) | 277 | - | 278 | 6 (2.2) | ≤0.001 | |
| At-risk (85th to <95th) | 48 | - | 48 | 21 (43.8) | ||||
| Overweight (95th ≤) | 55 | - | 57 | 50 (87.7) | ||||
| total | 380 | 383 (100%) | 77 (20.1) | |||||
| 10 years ≤ | BMI percentile† | Normal (<85th) | 402 | 1(0.2) | 412 | 33 (8) | ≤0.001 | |
| At risk (85th to <95th) | 120 | 19(15.8) | ≤0.001 | 131 | 99 (75) | |||
| Overweight (95th ≤) | 65 | 25(38.5) | 72 | 68 (94.4) | ||||
| total | 587 | 45(7.7) | 615 | 200 (32.5) |
Using Iranian data set for BMI percentiles
Using CDC2000 data set for BMI percentiles
For children 6 to <10 yr old, which according to IDF the diagnosis of metabolic syndrome cannot be made, instead, only ≥90th percentile of waist circumference with national age and gender specified cut-offs
The metabolic syndrome diagnosed for children 10 to <16 yr old, with abdominal obesity (national cut-offs for≥90th percentile of waist circumference) and the presence of two or more of other criteria for metabolic syndrome i.e. hyper-triglyceridemia (≥150mg/dl), low HDL-chol. (<40mg/dl), high BP (systolic BP≥130 or diastolic BP≥85 mm Hg), increased plasma glucose FPG≥100mg). For children older than 16, abdominal obesity (wc ≥ 90th percentile with ethnicity age & gender specified cut-offs for Iranians and the presence of two or more metabolic syndrome criteria’s ie. Hyper-triglyceridemia (≥150mg/dl), low HDL-chol. (<40mg/dl in males and <50mg/dl in females), high blood pressure (systolic BP≥130 or diastolic BP≥85 mm Hg), increased plasma glucose FPG≥100mg) or previously diagnosed T2DM