Table 1.

Relationship between serum vitamin D level and severity of osteoporosis.

	Singh’s Index
			Grade 1	Grade 2	Grade 3	Grade 4	Total
Vitamin D Levels	>30 ng/ml	Frequency	1	2	4	1	8
		Percent	12.5%	25%	50%	12.5%	8%
	20–29 ng/ml	Frequency	1	12	11	3	27
		Percent	4%	44.4%	40.7%	13%	27%
	<20 ng/ml	Frequency	4	37	22	2	65
		Percent	5.7%	56.9%	33.8%	2.8%	65%
	Total	Overall Frequency	6	51	37	6	100
		Overall Percent	6%	51%	37%	6%	100%