Table 3
Summer sunlight exposure, daily dietary vitamin D intake and serum 25-hydroxycholecalciferol concentrations in patients with tuberculosis (TB) and their contacts frequency-matched for age, sex and skin colour
TB(n = 35)
Contacts(n = 35)
Mean difference(95% CI)
p Value
Sun exposure
Adequate
12
12
0
Inadequate
23
23
0
Dietary vitamin D (μg)
6.1 (5.4)
6.1 (8.2)
0.03 (−3.3 to 3.3)
Serum vitamin D (nmol/l)
21.1 (2.5)
33.8 (3.0)
12.7 (4.8 to 20.6)
0.002