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Table 5 Median values of nutrient intakes (percentages of nutrient reference values) by socio-demographic category

From: Nutrient intakes of rural Tibetan mothers: a cross-sectional survey

  Energy (kJ/d) Protein (g/d) Fat (g/d) Carbohydrate (g/d) Vitamin A (μg/d) Vitamin B1 (mg/d) Vitamin B2 (mg/d) Vitamin C (mg/d) Vitamin E (mg/d) Calcium (mg/d) Iron (mg/d) Zinc (mg/d)
Age, y*
≤ 23.9 8682 (90.2) 58 (82.8) 59 (92.2) 341 (98.8) 237 (33.9) 0.9 (70.0) 0.7 (57.5) 75 (75.0) 12 (85.7) 516 (64.5) 34 (171.4) 17.4 (151.3)
24-29.9 9100 (94.5) 58 (82.8) 59 (92.2) 377 (109.3) 270 (38.6) 0.9 (70.0) 0.6 (51.7) 71 (71.0) 12 (85.7) 521 (65.1) 35 (175.7) 17.1 (149.0)
≥30 8447 (87.7) 55 (78.6) 52 (81.3) 351 (101.7) 224 (32.0) 0.9 (70.0) 0.6 (51.7) 58 (58.0) 11 (78.6) 511 (63.9) 35 (175.7) 17.6 (153.1)
Educational years
< 1 8138 (84.5) 53 (75.7) 53 (82.2) 326 (94.4) 213b (30.4) 0.8 (63.1) 0.6 (51.7) 60a (60.0) 11 (78.6) 482 (60.3) 33 (166.3) 17.3 (150.7)
1-8 9151 (95.1) 60 (85.4) 59 (92.2) 373 (108.2) 244 (34.9) 0.9 (70.0) 0.7 (57.5) 71 (71.0) 12 (85.7) 546 (68.2) 36 (179.0) 17.1 (149.0)
≥ 9 9218 (95.8) 61 (87.3) 62 (97.3) 375 (108.6) 293 (41.8) 0.9 (69.2) 0.6 (52.5) 84 (83.7) 12 (85.7) 511 (63.9) 33 (166.2) 17.6 (153.4)
Maternal occupation
Farming and animal husbandry only 8669 (90.1) 57 (82.1) 56 (87.4) 360 (104.3) 235 (33.6) 0.9 (66.9) 0.6 (53.3) 68 (67.7) 12 (85.7) 515 (64.4) 34 (171.4) 17.3 (150.7)
Others 9180 (95.3) 60 (86.4) 60 (94.3) 354 (102.5) 279 (39.9) 0.9 (69.2) 0.6 (50.8) 69 (69.0) 12 (85.7) 523 (65.3) 35 (175.7) 17.3 (150.7)
Family size
≤ 3 8414 (87.4) 53 (75.4) 52 (81.7) 346 (100.3) 216 (30.9) 0.9 (69.2) 0.6 (50.0) 58 (57.6) 10 (71.4) 513 (64.3) 35 (173.0) 16.7 (144.8)
4-7 8874 (92.2) 58 (83.0) 59 (92.0) 360 (104.3) 248 (35.5) 0.9 (66.2) 0.7 (55.0) 69 (69.2) 12 (85.7) 527 (65.8) 35 (176.8) 17.6 (153.1)
≥ 8 8514 (88.4) 58 (83.4) 51 (79.8) 362 (105.1) 231 (33.0) 0.9 (67.7) 0.6 (52.5) 82 (82.0) 12 (85.7) 496 (62.0) 30 (151.4) 15.8 (137.0)
BMI, kg/m2
< 18.5 8786 (91.3) 58 (82.6) 58 (90.4) 371 (107.4) 282 (40.3) 0.9 (72.3) 0.6 (53.3) 80 (80.3) 13 (92.9) 539 (67.3) 35 (176.8) 18.0 (156.3)
18.5-24.9 8594 (89.3) 57 (81.6) 55 (86.8) 350 (101.4) 235 (33.6) 0.9 (66.2) 0.6 (52.5) 64 (64.0) 11 (78.6) 514 (64.3) 33 (166.7) 17.3 (150.7)
25-29.9 8318 (86.4) 56 (79.5) 52 (81.3) 348 (100.9) 171 (24.5) 0.8 (61.5) 0.6 (53.3) 73 (72.8) 11 (78.6) 494 (61.8) 36 (181.0) 17.2 (149.5)
  1. * Age categories of < 20.0 and 20-23.9 years are presented as < 23.9
  2. Significant differences in intakes of protein, vitamin A, and vitamin C according to years of education (P < 0.05); Retinol equivalent
  3. a significant difference in vitamin C intake for < 1 versus 1-8 years of education using the Wilcoxon two-sample test (P < 0.017)
  4. b significant difference in vitamin A intake for < 1 versus ≥ 9 years of education using the Wilcoxon two-sample test (P < 0.017)