Table 2.

Differences in serum vitamin D (Vit D) levels^a among study participants: blacks versus whites^b and cases^c versus controls^d

Participants	Serum Vit D levels (ng/mL)e according to ethnicity
	Blacksf	Whitesg	Total (n = 154)h
Cases	12.9 ± 5.0 (n = 61)	24.45 ± 12.85 (n = 43)	19.7 ± 11.8 (n = 104)
Controls	18.30 ± 3.35 (n = 26)	29.53 ± 8.13 (n = 24)	22.3 ± 6.5 (n = 50)
Total (n = 154)i	14.2 ± 5.2 (n = 87)	25.5 ± 12.2 (n = 67)	–

Notes:

^aSerum Vit D levels were measured in blood samples of all consenting participants, by radioimmunoassay;

^bethnicity of the participants was determined by self-identification in clinic records;

^ccases were participants who had at least one fibroid (minimum volume of 2 cm³), confirmed by transvaginal ultrasonography;

^dcontrols were participants who did not have any fibroids, confirmed by transvaginal ultrasonography;

^edata presented as mean plus or minus standard deviation;

^fP = 0.05 (statistically significant);

^gP = 0.052;

^hP = 0.01 (statistically significant);

ⁱP = 0.03 (statistically significant).