Table 6

Descriptive statistics of dietary nitrate, nitrite, and nitrosamine intake and limb deficiency defects in offspring
N (%)
Limb deficiency defect N Mean (SD) Quartile 1 Quartile 2 Quartile 3 Quartile 4
Nitrate (mg/day)
Longitudinal 245 47.12 (31.52) 73 (29.8) 55 (22.4) 60 (24.5) 57 (23.3)
Transverse 379 46.97 (33.93) 101 (26.6) 105 (27.7) 95 (25.1) 78 (20.6)
Intercalary 34 45.84 (24.04) 10 (29.4) 7 (20.6) 7 (20.6) 10 (29.4)
Preaxial* 143 45.19 (30.13) 46 (32.2) 32 (22.4) 34 (23.8) 31 (21.7)
Nitrite (mg/day)
Longitudinal 245 1.76 (0.96) 73 (29.8) 50 (20.4) 54 (22.0) 68 (27.8)
Transverse 379 1.80 (1.00) 95 (25.1) 102 (26.9) 86 (22.7) 96 (25.3)
Intercalary 34 1.86 (0.88) 5 (14.7) 9 (26.5) 7 (20.6) 13 (38.2)
Preaxial* 143 1.78 (1.02) 42 (29.4) 33 (23.1) 31 (21.7) 37 (25.9)
Animal Nitrite (mg/day)
Longitudinal 247 1.12 (0.79) 66 (26.7) 59 (23.9) 64 (25.9) 58 (23.5)
Transverse 381 1.12 (0.77) 99 (26.0) 94 (24.7) 90 (23.6) 98 (25.7)
Intercalary 34 1.26 (0.82) 5 (14.7) 7 (20.6) 9 (26.5) 13 (38.2)
Preaxial* 145 1.15 (0.87) 38 (26.2) 37 (25.5) 36 (24.8) 34 (23.4)
Plant Nitrite (mg/day)
Longitudinal 247 0.64 (0.36) 64 (25.9) 63 (25.5) 56 (22.7) 64 (25.9)
Transverse 381 0.68 (0.42) 101 (26.5) 89 (23.4) 83 (21.8) 108 (28.3)
Intercalary 34 0.60 (0.29) 8 (23.5) 9 (26.5) 10 (29.4) 7 (20.6)
Preaxial* 145 0.63 (0.34) 37 (25.5) 39 (26.9) 33 (22.8) 36 (24.8)
Nitrosamine (μg/day)
Longitudinal 245 0.56 (0.46) 65 (26.5) 62 (25.3) 55 (22.4) 63 (25.7)
Transverse 380 0.82 (5.82) 100 (26.3) 99 (26.1) 91 (23.9) 90 (23.7)
Intercalary 34 0.63 (0.30) 4 (11.8) 9 (26.5) 11 (32.4) 10 (29.4)
Preaxial* 143 0.52 (0.31) 41 (28.7) 34 (23.8) 33 (23.1) 35 (24.5)

* Subcategory of longitudinal limb deficiency.

Huber et al.

Huber et al. Nutrition Journal 2013 12:34   doi:10.1186/1475-2891-12-34

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