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Table 2 Baseline characteristics of participants according to quartiles of dietary patterns

From: Dietary pattern is associated with obesity in Chinese children and adolescents: data from China Health and Nutrition Survey (CHNS)

  Traditional Chinese Dietary pattern scores p-value
All Q1 Q2 Q3 Q4
N 489 122 122 123 122  
Sex (%)       0.835
 Boy 249 (50.92) 65 (53.28) 63 (51.64) 58 (47.54) 63 (51.22)  
 Girl 240 (49.08) 57 (46.72) 59 (48.36) 64 (52.46) 60 (48.78)  
Age in years (Mean SD) 9.08 (2.76) 8.69 (2.63) 8.20 (2.69) 9.47 (2.83) 9.95 (2.58) < 0.001
Residency (%)       0.075
 Urban 142 (29.04) 33 (27.05) 41 (33.61) 42 (34.43) 26 (21.14)  
 rural 347 (70.96) 89 (72.95) 81 (66.39) 80 (65.57) 97 (78.86)  
Highest level of parental Education (%)a       0.105
 Illiterate or primary school 101 (20.74) 17 (13.93) 23 (19.17) 29 (23.77) 32 (26.02)  
 Junior middle school 224 (46.00) 58 (47.54) 62 (51.67) 53 (43.44) 51 (41.46)  
 High middle school 84 (17.25) 25 (20.49) 22 (18.33) 18 (14.75) 19 (15.45)  
 Technical or vocational degree 50 (10.27) 18 (14.75) 10 (8.33) 11 (9.02) 11 (8.94)  
 College or higher 28 (5.75) 4 (3.28) 3 (2.50) 11 (9.02) 10 (8.13)  
Region (%)       < 0.001
 Western 104 (21.27) 10 (8.20) 29 (23.77) 30 (24.59) 35 (28.46)  
 Eastern 147 (30.06) 59 (48.36) 45 (36.89) 33 (27.05) 10 (8.13)  
 Central 238 (48.67) 53 (43.44) 48 (39.34) 59 (48.36) 78 (63.41)  
Obesity status (%)       0.01
 Non-overweight or obesity 396 (80.98) 84 (68.85) 102 (83.61) 107 (87.70) 103 (83.74)  
 Overweight 37 (7.57) 15 (12.30) 7 (5.74) 7 (5.74) 8 (6.50)  
 Obesity 56 (11.45) 23 (18.85) 13 (10.66) 8 (6.56) 12 (9.76)  
Physical activity (Mean SD) 7.06 (5.32) 6.67 (5.17) 7.28 (5.22) 7.39 (5.51) 7.03 (5.54) 0.265
Energy (Mean SD)b 1462.43 (530.01) 1285.73 (455.83) 1243.43 (415.33) 1454.80 (495.97) 1862.476 (511.79) < 0.001
  Modern Dietary pattern scores  
All Q1 Q2 Q3 Q4 p-value
N 489 122 122 122 123  
Sex (%)       0.204
 Boy 249 (50.92) 65 (53.28) 52 (42.62) 67 (54.92) 65 (52.85)  
 Girl 240 (49.08) 57 (46.72) 70 (57.38) 55 (45.08) 58 (47.15)  
Age in years (Mean SD) 9.08 (2.76) 8.80 (2.63) 9.16 (2.79) 9.11 (2.95) 9.24 (2.67) 0.6044
Residency (%)       < 0.001
 Urban 142 (29.04) 25 (20.49) 28 (22.95) 35 (28.69) 54 (43.90)  
 rural 347 (70.96) 97 (79.51) 94 (77.05) 87 (71.31) 69 (56.10)  
Highest level of parental Education (%)a       < 0.001
 Illiterate or primary school 101 (20.74) 39 (32.50) 36 (29.50) 11 (9.02) 15 (12.20)  
 Junior middle school 224 (46.00) 59 (49.17) 58 (47.53) 61 (50.00) 46 (37.40)  
 High middle school 84 (17.25) 17 (14.17) 19 (15.57) 22 (18.03) 26 (21.14)  
 Technical or vocational degree 50 (10.27) 3 (2.50) 7 (5.74) 19 (15.57) 21 (17.07)  
 College or higher 28 (5.75) 2 (1.67) 2 (1.64) 9 (7.38) 15 (12.20)  
Region (%)       < 0.001
 Western 104 (21.27) 60 (49.18) 32 (26.23) 7 (5.74) 5 (4.07)  
 Eastern 147 (30.06) 10 (8.20) 20 (16.39) 39 (31.97) 78 (63.41)  
 Central 238 (48.67) 52 (42.62) 70 (57.38) 76 (62.3) 40 (32.52)  
Obesity status (%)       0.208
 Non-overweight or obesity 396 (80.98) 108 (88.52) 99 (81.15) 94 (77.05) 95 (77.24)  
 Overweight 37 (7.57) 3 (2.46) 10 (8.20) 12 (9.84) 12 (9.76)  
 Obesity 56 (11.45) 11 (9.02) 13 (10.66) 16 (13.11) 16 (13.01)  
Physical activity (Mean SD) 7.06 (5.32) 7.33 (5.78) 6.90 (5.39) 7.02 (5.18) 7.01 (5.03) 0.797
Energy (Mean SD)b 1462.43 (530.01) 1325.28 (461.8118) 1386.38 (488.41) 1461.66 (552.026) 1674.66 (550.73) < 0.001
  1. p-value was calculated from χ2 test for binary variables or by ANOVA for continuous variables. Dietary patterns were identified at baseline (in 2006). p-values< 0.05 are bold. a: n = 487 cause of the missing data. b: n = 435 cause of the missing data