Table 1 |
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|
Comparative study sample characteristics |
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|
Participant characteristic |
Black African n = 12 |
White n = 12 |
Hair pluckability Mean (SD) |
Test statistic (P value) |
|
|
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|
Ethnicity (number): |
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|
Black African |
12 |
0 |
39.9 (10.8) |
0.89 (0.372)1 |
|
White Australian |
0 |
1 |
38.7 (11.0) |
|
|
White British |
0 |
9 |
38.7 (11.0) |
|
|
White German |
0 |
1 |
38.7 (11.0) |
|
|
White Italian |
0 |
1 |
38.7 (11.0) |
|
|
Gender (number) |
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|
Male |
4 |
4 |
40.9 (11.2) |
1.58 (0.115)1 |
|
Female |
8 |
8 |
38.5 (10.7) |
|
|
Age (Mean (SD)) |
35.3 (9.1)2 |
36.7 (9.1) |
36.0 (9.1) |
0.083 (0.208)3 |
|
Age groups |
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|
19–29 y |
4 |
2 |
41.6 (12.5) |
10.38 (<0.001)4 |
|
30–40 y |
3 |
6 |
35.4 (9.5) |
|
|
41–52 y |
4 |
4 |
41.7 (10.0) |
|
|
Age groups |
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|
19–36 y |
6 |
6 |
38.4 (11.6) |
1.39 (0.187)1 |
|
>36 y |
5 |
6 |
40.2 (10.1) |
|
|
Hair color (number): |
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|
Black |
11 |
1 |
39.7 (10.9) |
0.157 (0.525)5 |
|
Brown |
0 |
8 |
38.9 (10.9) |
|
|
Blonde |
0 |
2 |
38.9 (10.9) |
|
|
Grey |
1 |
0 |
38.9 (10.9) |
|
|
Red |
0 |
1 |
38.9 (10.9) |
|
|
Hair length (number): |
||||
|
Shorter than ear length |
8 |
8 |
37.5 (32.5, 45.0)6 |
1.09 (0.579)5 |
|
Between chin and shoulder |
3 |
2 |
37.8 (29.9, 47.5)6 |
|
|
Longer than shoulder |
1 |
2 |
42.6 (29.7, 50.1)6 |
|
|
Hair currently permed |
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|
Yes |
7 |
0 |
40.2 (10.2) |
0.78 (0.436)1 |
|
No |
4 |
12 |
38.9 (11.2) |
|
|
Hair currently dyed |
||||
|
Yes |
2 |
7 |
41.4 (10.5) |
1.90 (0.058)1 |
|
No |
10 |
4 |
38.4 (11.0) |
|
|
Currently have hair products on hair |
||||
|
Yes |
7 |
6 |
39.5 (10.9) |
0.25 (0.804)1 |
|
No |
4 |
6 |
39.1 (11.0) |
|
|
Broken hair |
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|
≥1 |
3 |
1 |
41.4 (10.7) |
-1.36 (0.177)1 |
|
None |
9 |
11 |
38.9 (10.9) |
|
|
|
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|
1Independent t-test, 2N = 11 as one participant did not report their age, 3Spearman's correlation, 4One-way ANOVA, 5Kruskal Wallis test, 6Median (Interquartile range) |
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|
Wyness et al. Nutrition Journal 2007 6:9 doi:10.1186/1475-2891-6-9 |
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