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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: Behav Sleep Med. 2018 Jan 29;17(4):514–523. doi: 10.1080/15402002.2018.1425867

Table 3:

Characteristics of each of the three latent classes

Variables Mean (Standard Deviation)
n (%)
p-value
Mild Moderate Severe
SD
(n=45, 27%)
SD/AD
(n=85, 52%)
SD/AD/PTSD
(n=34, 21%)

Age 45.9 (9.6) 46.0 (9.3) 44.4 (10.1) .682
Gender
 Male 37 (82.2) 62 (72.9) 16 (47.1) .002*
 Female 8 (17.8) 23 (27.1) 18 (52.9)
Race
 Black / African American 26 (57.8) 39 (45.9) 13 (38.2) .091
 White 14 (31.1) 40 (47.1) 18 (52.9)
 Other 1 ( 2.2) 4 ( 4.7) 3 ( 8.8)
 Unknown 4 ( 8.9) 2 ( 2.4) 0 ( 0.0)
Ethnic
 Non-Hispanic 43 (97.7) 82 (97.6) 32 (94.1) .570
 Hispanic 1 ( 2.3) 2 ( 2.4) 2 ( 5.9)

 Numbers may not sum to total due to missing data.

 AD, anxiety and depression; PTSD, post-traumatic stress disorder; SD, sleep disturbance.

*

p < .05