Table 9.

Statistical data on vitamin D between various groups.

Total cohort	Before treatment (Mean ± SD of vitamin D in ng/ml)	After treatment (Mean ± SD of vitamin D in ng/ml)
Acute vs Chronic
Acute n = 26 (30%)	14.67 ± 6.85, 95% CI = 11.90 to 17.43	68.15 ± 23.95, 95% CI = 51.48to 85.56.
Chronic n = 58 (70%)	16.18 ± 6.52, 95% CI = 14.47 to 17.89	81.59 ± 28.75, 95% CI = 74.03 to 89.15
Independent sample T test	t = 0.97, Df = 82, p = 0.34	t = 2.08, Df = 82, p = 0.04.
Indoor vs Outdoor
Indoor n = 60 (71%)	14.47 ± 6.08, 95% CI = 12.90 to 16.04	75.85 ± 28.52, 95% CI = 68.48 to 83.22
Outdoor n = 24 (29%)	19.07 ± 6.73, 95% CI = 16.22 to 21.91.	81.39 ± 26.53, 95% CI = 70.18 to 92.59
Independent sample T test	t = 3.03, Df = 82, p = 0.003	t = 0.82, Df = 82, p = 0.42.
Non smokers vs Smokers
Non smokers n = 80 (95%)	15.71 ± 6.60, 95% CI = 14.25 to 17.18	76.29 ± 27.13, 95% CI = 70.25 to 82.33
Smokers n = 4(5%)	15.67 ± 8.15, 95% CI = 2.71 to 28.64	101.02 ± 37.18, 95% CI = 41.86 to 160.19
Independent sample T test	t = −0.012, Df = 82, p = 0.99.	t = 1.75, Df = 82, p = 0.08

Chronic: Group of subjects who had back pain for more than 3 months duration.

Acute: Group of subjects who had back pain for less than 3 months duration.

Indoor: Group of subjects who were not exposed to adequate sunlight.

Outdoor: Group of subjects who were exposed to adequate sunlight.

Non smokers: Group of subjects who never smoked cigarettes.

Smokers: Group of subjects who have a habit of smoking cigarettes.