. 2021 Jan 13;129(1):017002. doi: 10.1289/EHP7310

Table 1.

Characteristics, self-reported symptoms and diseases, and FLG null frequencies among the study participants.

Characteristic	n (%)	n (%)	p-Value^a
Characteristic	FLG null ( $n = 23$ )	FLG wt ( $n = 31$ )	p-Value^a
Age ( $mean \pm SD$ )	$39.6 \pm 15.0$	$38.8 \pm 15.3$	0.45
BMI ( $mean \pm SD$ )	$24.4 \pm 5.8$	$24.1 \pm 4.6$	0.62
Sex
Male	10 (43.5)	12 (38.7)	0.72
Female	13 (56.5)	19 (61.7)	—
Smoking
Passive smoker	0 (0)	3 (9.7)	0.12
Party smoker	2 (8.7)	1 (3.2)	0.38
Previous smoker	8 (34.8)	9 (29.0)	0.57
Rash	4 (17.4)	7 (22.6)	0.64
Allergy symptoms, nose	14 (60.9)	12 (38.7)	0.20
Allergy symptoms, eyes	15 (65.2)	12 (38.7)	0.13
Asthma	4 (17.4)	3 (9.7)	0.40
Hand eczema	7 (30.4)	5 (16.1)	0.21
Wrist/forearm eczema	4 (17.4)	5 (16.1)	0.90
Dry skin	15 (65.2)	17 (54.8)	0.31
Childhood eczema	6 (26.1)	8 (25.8)	0.98
Nickel allergy	1 (4.3)	6 (19.4)	0.21
FLG null genotype
R501X	8 (34.7)	0	NA
R2447X	2 (8.7)	0	NA
S3247X	3 (13.0)	0	NA
2282del4	10 (43.5)	0	NA

Note: $p$ -Values represent differences between FLG null and wt carriers. —, no data; BMI, body mass index; SD, standard deviation; NA, not applicable.

^{^a}

For continuous variables: Student’s $t$ -test, for categorical variables: chi-square test.