Table 1.

Vitamin D₃ stratification by diagnosis, race,^† gender and body mass index (BMI).^‡

	Control (n = 14)	CRSsNP (n = 20)	CRSwNP (n = 9)	AFRS (n = 14)
	Mean ± s.d.	Mean ± s.d.	Mean ± s.d.	Mean ± s.d.
Male	53·3 ± 14	50·2 ± 30	18·0 ± 17	26·4 ± 24
Female	45·3 ± 15	58·3 ± 28	15·8 ± 7	15·5 ± 9
P-value	0·33	0·15	0·79	0·32
Caucasian	56·0 ± 14	43·8 ± 13	21·3 ± 17	31·2 ± 22
African American	41·2 ± 15	59·0 ± 4	8·5 ± 9	13·0 ± 7
P-value	0·09	0·11	0·35	0·07
Healthy	53·0 ± 15	39·7 ± 14	21·7 ± 5	32·0 ± 2
Overweight	50·0 ± 18	45·3 ± 13	18·5 ± 10	8·9 ± 6·8
P-value	0·78	0·44	0·64	0·03*

^*Statistically significant.

^†For stratification by race, data from one Hispanic individual was excluded.

^‡Using the classification system defined by the US National Institute of Health, individuals were stratified by BMI as healthy (≥18·5 to 24·9) or overweight (≥25). CRSsNP, chronic rhinosinusitis without nasal polyps; CRSwNP, chronic rhinosinusitis with nasal polyps; AFRS, allergic fungal rhinosinusitis; s.d., standard deviation.