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Table 3 Characteristics of Cluster A’s, Cluster B’s and Cluster C’s participants

From: Association between dietary knowledge and overweight/obesity in Chinese children and adolescents aged 8–18 years: a cross-sectional study

Characteristic

Total (n = 2,701)

Cluster A (n = 837)

Cluster B (n = 1264)

Cluster C (n = 600)

Statistic

P

Age, years, Mean ± SD

14.63 ± 1.96

14.74 ± 1.97

14.66 ± 1.94

14.44 ± 1.95

F = 4.412

0.012

Gender, n (%)

    

χ2 = 7.985

0.018

 Male

1425 (52.76)

438 (52.33)

641 (50.71)

346 (57.67)

  

 Female

1276 (47.24)

399 (47.67)

623 (49.29)

254 (42.33)

  

Geographic regiona, n (%)

    

χ2 = 110.382

 < 0.001

 Eastern China

631 (23.36)

148 (17.68)

364 (28.80)

119 (19.83)

  

 Central China

712 (26.36)

273 (32.62)

254 (20.09)

185 (30.83)

  

 Western China

795 (29.43)

194 (23.18)

391 (30.93)

210 (35.00)

  

 Northeastern China

563 (20.84)

222 (26.52)

255 (20.17)

86 (14.33)

  

Residential areas, n (%)

    

χ2 = 2.422

0.298

 Urban

1003 (37.13)

293 (35.01)

484 (38.29)

226 (37.67)

  

 Rural

1698 (62.87)

544 (64.99)

780 (61.71)

374 (62.33)

  

Maternal education level, n (%)

    

χ2 = 54.051

 < 0.001

 Below primary school

356 (13.18)

126 (15.05)

132 (10.44)

98 (16.33)

  

 Primary school

545 (20.18)

185 (22.10)

225 (17.80)

135 (22.50)

  

 Middle school

1077 (39.87)

353 (42.17)

487 (38.53)

237 (39.50)

  

 High school and above

723 (26.77)

173 (20.67)

420 (33.23)

130 (21.67)

  

Smoking, n (%)

95 (3.52)

32 (3.82)

40 (3.16)

23 (3.83)

χ2 = 0.871

0.647

Alcohol consumption, n (%)

390 (14.44)

74 (8.84)

196 (15.51)

120 (20.00)

χ2 = 37.415

 < 0.001

Waist-to-hip ratio, Mean ± SD

0.82 ± 0.09

0.82 ± 0.08

0.82 ± 0.10

0.83 ± 0.09

F = 1.337

0.263

SBP, mmHg, Mean ± SD

106.05 ± 11.49

106.55 ± 11.26

105.88 ± 11.20

105.73 ± 12.34

F = 1.158

0.314

DBP, mmHg, Mean ± SD

69.53 ± 8.52

69.79 ± 8.58

69.51 ± 8.21

69.23 ± 9.06

F = 0.776

0.460

  1. Cluster A: high diet knowledge level; Cluster B: medium diet knowledge level; Cluster C: low diet knowledge level
  2. SD Standard deviation, SBP Systolic blood pressure, DBP Diastolic blood pressure
  3. aEastern China includes: the city of Beijing and Shanghai, the province of Jiangsu, Shandong and Zhejiang; Central China includes: the province of Henan, Hubei and Hunan; Western China includes: the province of Guizhou, Guangxi, Shanxi and Yunnan, the city of Chongqing; Northeastern China includes: the province of Liaoning and Heilongjiang