Table 2.

Differences between baseline and the 30^th and 120^th days of SGRQ scores and its components in the study groups.

SGRQ component	By day 30			By day120
	Placebo	Vitamin D	p-value	Placebo	Vitamin D	p-value
Symptom score	10.71 ± 6.44	15.18 ± 8.85	0.050	12.26 ± 7.81	19.45 ± 8.94	0.001*
Activity score	1.88 ± 3.73	4.11 ± 3.43	0.008*	2.69 ± 3.96	8.11 ± 6.13	0.001*
Impact score	2.61 ± 3.20	3.77 ± 3.82	0.40	2.13 ± 4.39	5.76 ± 4.62	0.007*
Total score	3.73 ± 1.84	5.69 ± 2.13	0.0003*	3.99 ± 2.19	8.66 ± 3.32	0.0001*

^*Significant improvement in vitamin D group versus placebo (p < 0.05)