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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: Environ Int. 2021 Jun 3;154:106655. doi: 10.1016/j.envint.2021.106655

Table 2.

Study population characteristics of hairdressers and office workers (N=40).

All Hairdressers (N=23) Office Workers (N=17) Hairdressers from Black Salons (N=11) Hairdressers from Dominican Salons (N=12)
n (%) n (%) p-valuea n (%) n (%) p-valuea
Race
Hispanic/Latina 11 (47.8) 7 (41.2) 0.52 1 (9.1) 10 (83.3) 0.0001
Non-Hispanic Black 11 (47.8) 7 (41.2) 10 (90.9) 1 (8.3)
Otherb 1 (4.4) 3 (17.6) 0 (0) 1 (8.3)
Highest Education Obtained
< High School 4 (17.4) 0 (0) <0.0001 0 (0) 4(33.3) 0.21
High School or GED 6 (26.1) 1 (5.9) 4 (36.4) 2 (16.7)
Trade School 8 (34.8) 1 (5.9) 4 (36.4) 4 (33.3)
College 5 (21.7) 12 (70.6) 3 (27.3) 2 (16.7)
Other 0 (0) 3 (17.7) 0 (0) 0 (0)
Incomed
≤ $30,000 10 (52.6) 3 (17.7) 0.10 5 (45.5) 5 (62.5) 0.59
$30,001–$50,000 4 (21.1) 3 (17.7) 2 (18.2) 2 (25.0)
$50,001–$75,000 2 (10.5) 4 (23.5) 1 (9.0) 1 (12.5)
> $75,000 3 (15.8) 7 (41.2) 3 (27.3) 0 (0)
Smoking Status
No 19 (82.6) 16 (94.1) 0.37 7 (63.6) 12 (100.0) 0.04
Yes 4 (17.4) 1 (5.9) 4 (36.4) 0 (0)
Mean (SD) Mean (SD) p-valuec Mean (SD) Mean (SD) p-valuec
Age (years) 40.2 (10.6) 33.6 (7.9) 0.05 37.3 (10.2) 42.8 (10.6) 0.22
Number of years working in hair salons 15.1 (9.5) n/a 14.9 (9.4) 15.3 (10.1) 0.83
Number of hours worked during the week 44.3 (18.7) 40.4 (10.4) 0.73 46.2(23.7) 42.6 (13.4) 0.69
Number of clients per week 26.2 (12.1) n/a 19.2 (8.8) 32.7 (11.4) 0.001
a

p-values based on Chi-square or Fischer’s exact test, where appropriate

b

Other race categories include: White, Asian, American Indian or Alaska Native, and Other.

c

p-values based on Wilcoxon-Mann Whitney Test.

d

Four hairdressers did not report income.

Significant findings are listed in boldface (p< 0.05).

Abbreviation: SD, Standard Deviation.