Table 4.
Proportion of the United Kingdom population meeting dietary reference value thresholds for vitamin C.
| Variables | Sex | TotalTotal | Years | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 1–3 | 4–10 | 11–14 | 15–18 | 19–64 | 65–74 | 75+ | |||
| Meeting RNI threshold | Male | 1,410 (80.4%) | 49 (88.1%) | 149 (92.9%) | 73 (81.0%) | 56 (74.3%) | 846 (78.8%) | 155 (82.4%) | 82 (73.9%) |
| Female | 1,437 (79.7%) | 46 (86.0%) | 134 (87.9%) | 64 (83.0%) | 58 (73.0%) | 857 (79.1%) | 166 (78.8%) | 112 (76.2%) | |
| Below EAR | Male | 135 (7.7%) | 2 (4.0%) | 3 (2.1%) | 9 (9.7%) | 6 (7.8%) | 94 (8.8%) | 10 (5.4%) | 11 (9.5%) |
| Female | 139 (7.7%) | 2 (3.8%) | 6 (4.2%) | 4 (5.5%) | 9 (11.5%) | 86 (7.9%) | 15 (7.2%) | 15 (10.4%) | |
| Below LRNI | Male | 10 (0.6%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 7 (0.7%) | 1 (0.6%) | 1 (0.7%) |
| Female | 18 (1.0%) | 0 (0%) | 1 (0.5%) | 0 (0%) | 2 (2.1%) | 13 (1.2%) | 0 (0%) | 2 (1.5%) | |
RNI, Reference Nutrient Intake; LRNI, lower reference nutrient intake; EAR, estimated average intake, taken from: Department of Health, Dietary Reference Values for Food Energy and Nutrients for the United Kingdom, HMSO, 1991. Dietary Reference Value cut-offs vary by age ranges as follows: 1–10 years, LRNI = 8 mg/day, EAR = 20 mg/day, RNI = 30 mg/day; 11–14 years, LRNI = 9 mg/day, EAR = 22 mg/day, RNI = 35 mg/day; 15–75 + years, LRNI = 10 mg/day, EAR = 25 mg/day, RNI = 40 mg/day.
Data excludes (n=409) who did not meet the RNI threshold but whose intake remained above the EAR therefore considered to be marginally at risk of inadequate intake.