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Table 1 Baseline characteristics of subjects according to serum 25(OH)D concentrations [mean (SD)], unless stated otherwise

From: Vitamin D deficiency associations with metabolic, bone turnover and adverse general health markers in community free living adults

Characteristic

Deficiency

25(OH)D (< 20 ng/ml)

Insufficiency

25(OH) (20-32 ng/ml)

Optimal

25(OH)D (> 32 ng/ml)

P value

Total number of subjects n (%)

286 (44)

234 (36)

128 (20)

 

Age (years)*

36.5 (12)

38.7 (12)

41.4 (13.0)

0.002

Age < 50, n (%)

239 (49)

172 (35)

77 (16)

 

Age ≥ 50, n (%)*

39 (32.5)

45 (37.5)

36 (30)

0.000

Sex

 Female*

233 (82)

168 (72)

88 (69)

0.004

Do you smoke, n (%)

 Yes, on most or all days

33 (11.8)

31 (13.4)

16 (12.9)

 

 Only occasionally

10 (3.6)

10 (4.3)

8 (6.5)

 

 No

236 (84.6)

190 (82.3)

100 (80.6)

0.723

Diabetes mellitus*

 Yes

29 (11.4)

26 (13.3)

23 (23.2)

0.015

Hypertension

 Yes

30 (11.8)

30 (15.3)

17 (16.7)

0.380

Angina or heart attack

 Yes

0 (0)

1 (0.5)

0 (0)

0.412

High cholesterol

 Yes

18 (7.1)

25 (12.8)

13 (13.3)

0.082

Sleep disturbance

 Yes

7 (2.8)

7 (3.6)

8 (8.3)

0.058

Past Operation

 Yes

133 (48.4)

88 (38.8)

44 (36.1)

0.017

  1. *P value < 0.05 for between group difference