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. 2015 Dec 31;17(6):10.4088/PCC.13m01551. doi: 10.4088/PCC.13m01551

Table 1.

Characteristics of the Sample (weighted) Combined and Stratified by Suicidal Ideationa

Variable Category Overall Sample Suicidal Ideation
Not at All (n = 5,191) Several Days (n = 177) More Than Half the Days (n = 33) Nearly Every Day (n = 40) Pb
Age (y) Continuous 45.760 ± 17.224 45.642 ± 16.951 47.176 ± 19.789 42.957 ± 19.452 45.530 ± 19.965 .676
Sex Male 0.52 0.51 0.49 0.58 0.51 .889
Female 0.48 0.49 0.51 0.42 0.49
Race Non-Hispanic white 0.69 0.70 0.61 0.55 0.63 .003
Hispanic/Latino 0.13 0.13 0.24 0.26 0.22
Black/African-American 0.11 0.11 0.12 0.17 0.16
Asian/other 0.06 0.05 0.04 0.02 0.00
Income (US $) < $20,000 0.16 0.15 0.34 0.45 0.47 < .001
20,000–$24,999 0.07 0.07 0.12 0.16 0.24
25,000–$34,999 0.11 0.11 0.15 0.09 0.25
35,000–$44,999 0.09 0.09 0.08 0.09 0.00
45,000–$54,999 0.08 0.09 0.05 0.04 0.01
55,000–$64,999 0.07 0.07 0.07 0.03 0.03
65,000–$75,000 0.07 0.08 0.06 0.02 0.00
> $75,000 0.33 0.34 0.12 0.12 0.00
Education < 9th grade 0.07 0.06 0.16 0.22 0.23 < .001
9th–11th grade 0.14 0.13 0.16 0.32 0.29
High school graduate 0.25 0.25 0.26 0.22 0.11
Some college 0.29 0.29 0.32 0.23 0.37
College graduate 0.25 0.26 0.11 0.01 0.00
Marital status Married 0.57 0.58 0.38 0.30 0.33 < .001
Widowed 0.06 0.05 0.09 0.12 0.05
Divorced 0.10 0.10 0.13 0.19 0.17
Separated 0.02 0.02 0.04 0.09 0.14
Never married 0.18 0.17 0.25 0.20 0.26
Living with partner 0.07 0.07 0.11 0.11 0.05
Exercise (min) Continuous 166.06 ± 221.64 168.59 ± 220.19 113.99 ± 213.78 156.21 ± 267.98 134.29 ± 276.23 .018
Sedentary activity (min) Continuous 334.62 ± 206.86 333.86 ± 204.46 319.26 ± 235.30 345.19 ± 259.41 270.91 ± 208.97 .278
Ever smoked No 0.53 0.53 0.51 0.23 0.23 .001
Yes 0.47 0.47 0.49 0.77 0.77
Type of smoker Never smoker 0.53 0.53 0.51 0.23 0.23 < .001
Current smoker 0.23 0.22 0.34 0.70 0.53
Former smoker 0.24 0.25 0.15 0.07 0.24
Alcohol use (no. of drinks/d) Continuous 2.82 ± 2.76 2.81 ± 2.75 3.08 ± 2.71 3.94 ± 2.83 4.43 ± 4.70 .049
Alcohol use (no. of days ≥ 5 drinks) Continuous 2.50 ± 2.37 2.48 ± 2.11 3.72 ± 3.66 1.69 ± 3.05 3.38 ± 9.09 .708
Depression No 0.98 0.98 0.79 0.65 0.23 < .001
Yes 0.02 0.02 0.21 0.35 0.77
Overall insomnia Continuous 3.78 ± 3.23 3.77 ± 3.17 5.81 ± 4.07 4.74 ± 4.21 6.33 ± 4.48 < .001
Difficulty falling asleep Never 0.39 0.38 0.22 0.23 0.17 < .001
Rarely 0.21 0.22 0.15 0.31 0.12
Sometimes 0.22 0.22 0.22 0.19 0.15
Often 0.11 0.11 0.21 0.04 0.23
Always 0.08 0.07 0.21 0.23 0.34
Difficulty maintaining sleep Never 0.36 0.36 0.19 0.37 0.24 < .001
Rarely 0.20 0.20 0.09 0.11 0.16
Sometimes 0.24 0.24 0.36 0.16 0.16
Often 0.13 0.13 0.20 0.23 0.28
Always 0.08 0.08 0.16 0.13 0.16
Early morning awakenings Never 0.45 0.44 0.30 0.42 0.25 < .001
Rarely 0.19 0.19 0.13 0.11 0.19
Sometimes 0.20 0.21 0.24 0.22 0.17
Often 0.10 0.10 0.21 0.18 0.15
Always 0.06 0.06 0.12 0.07 0.23
Sleep duration (h) < 5 0.05 0.05 0.14 0.15 0.17 < .001
5 0.09 0.09 0.10 0.09 0.10
6 0.23 0.23 0.21 0.24 0.18
7 0.29 0.30 0.22 0.12 0.14
8 0.26 0.26 0.25 0.36 0.36
9 0.05 0.05 0.04 0.04 0.00
> 9 0.02 0.02 0.04 0.01 0.06
a

Continuous variables are presented as mean ± SD, and categorical variables are presented as %. Univariate tests include 1-way analysis of variance for continuous variables and χ2 tests for categorical variables.

b

Bolding indicates statistical significance.