Table 2.

Association of different factors between CF patients having normal and low vitamin D [25(OH)D].

Characteristics	CF patients with [25(OH)D]≥30 (ng/mL) (n = 6)	CF patients with [25(OH)D] <30 (ng/mL) (n = 20)	P value
Age (years)	17.3 ± 2.7	17.3 ± 5.5	0.999
BMI	19.6 ± 2.9	22.9 ± 6.7	0.099
Gender (female)	3 (50%)	13 (65%)	0.644
Pseudomonas (+ive)	6 (100%)	10 (50%)	0.053
Time of exposure to the sun (<30 min per day)	3 (50%)	16 (80%)	0.293
Multivitamin (no)	2 (33.3%)	18 (90%)	0.013
Phosphorus (mmol/L)	1.3 ± 0.17	1.4 ± 0.20	0.504
Calcium level (mmol/L)	2.3 ± 0.09	2.3 ± 0.08	0.730
ALP (U/L)	80.7 ± 23.0	122.9 ± 53.2	0.011
Vitamin K levels (ng/L)	306.2 ± 170.6	187.6 ± 110.02	0.105
FEV1	75.3 ± 26.2	85.2 ± 8.9	0.403
L1–L4 BMD Z score	−0.58 ± 1.41	−0.52 ± 0.92	0.898
Total hip Z score	−0.13 ± 1.21	−0.38 ± 0.93	0.607
Total body Z score	−0.18 ± 1.37	−0.22 ± 0.83	0.944

BMI: body mass index.