Table 1.
Wave 1 characteristics of the low mood sample and the rest of the NESARC wave 2 sample (weighted percentages* (%) and SE)
| Variable | Total wave 2 sample (%) | SE | Low mood sample† (%) | SE | Rest of sample‡ (%) | SE |
| Sample size | 34 653 | 7352 | 27 301 | |||
| Smoking status | ||||||
| Current smoker | 27.02 | 0.17 | 31.65 | 0.38 | 25.85 | 0.19 |
| Former smoker | 19.58 | 0.16 | 17.84 | 0.28 | 20.02 | 0.17 |
| Never smoker | 53.40 | 0.19 | 50.51 | 0.42 | 54.13 | 0.20 |
| Wave 1 suicide-related outcomes | 11.42 | 0.10 | 25.55 | 0.27 | 7.84 | 0.10 |
| Want to die | 10.17 | 0.10 | 23.35 | 0.26 | 6.82 | 0.10 |
| Suicidal ideation | 8.42 | 0.09 | 19.27 | 0.27 | 5.66 | 0.09 |
| Suicide attempt | 2.35 | 0.04 | 6.09 | 0.17 | 1.40 | 0.04 |
| Demographics | ||||||
| Gender | ||||||
| Female | 52.08 | 0.16 | 64.13 | 0.40 | 49.02 | 0.17 |
| Male | 47.92 | 0.16 | 35.87 | 0.40 | 50.98 | 0.17 |
| Race/ethnicity | ||||||
| White | 70.93 | 0.24 | 71.39 | 0.40 | 70.81 | 0.25 |
| Black | 10.75 | 0.20 | 10.61 | 0.22 | 10.79 | 0.21 |
| Hispanic | 11.56 | 0.10 | 11.20 | 0.15 | 11.65 | 0.12 |
| Asian/Pac. Islander | 4.36 | 0.06 | 3.50 | 0.10 | 4.58 | 0.06 |
| Amer. Indian/Alaska Native | 2.40 | 0.11 | 3.29 | 0.20 | 2.17 | 0.11 |
| Age (years) | ||||||
| 18–19 | 4.02 | 0.07 | 4.47 | 0.15 | 3.91 | 0.08 |
| 20–29 | 17.78 | 0.14 | 19.28 | 0.30 | 17.40 | 0.15 |
| 30–44 | 30.90 | 0.17 | 32.28 | 0.29 | 30.54 | 0.18 |
| 45–64 | 31.08 | 0.15 | 31.64 | 0.24 | 30.94 | 0.17 |
| 65 and older | 16.22 | 0.10 | 12.32 | 0.25 | 17.21 | 0.12 |
| Household income | ||||||
| <$20 000 | 20.35 | 0.17 | 25.07 | 0.32 | 19.15 | 0.19 |
| $20 000–$34 999 | 19.62 | 0.13 | 20.84 | 0.27 | 19.31 | 0.15 |
| $35 000–$59 999 | 26.27 | 0.16 | 24.85 | 0.31 | 26.63 | 0.17 |
| $60 000 and over | 33.76 | 0.16 | 29.24 | 0.33 | 34.91 | 0.17 |
| Marital status | ||||||
| Married | 59.81 | 0.17 | 54.75 | 0.35 | 61.10 | 0.17 |
| Cohabiting | 3.25 | 0.06 | 3.60 | 0.11 | 3.16 | 0.07 |
| Widowed | 6.04 | 0.07 | 5.37 | 0.12 | 6.21 | 0.08 |
| Divorced | 8.45 | 0.06 | 10.73 | 0.19 | 7.87 | 0.07 |
| Separated | 1.98 | 0.04 | 2.98 | 0.12 | 1.73 | 0.04 |
| Never married | 20.46 | 0.17 | 22.57 | 0.33 | 19.93 | 0.17 |
| Education | ||||||
| Less than high school | 14.65 | 0.13 | 16.25 | 0.26 | 14.24 | 0.14 |
| High school diploma | 29.03 | 0.18 | 29.35 | 0.35 | 28.95 | 0.20 |
| College | 56.32 | 0.22 | 54.40 | 0.38 | 56.81 | 0.23 |
| Unemployed | 7.16 | 0.09 | 12.31 | 0.25 | 5.85 | 0.09 |
| Not unemployed | 92.84 | 0.09 | 87.69 | 0.25 | 94.15 | 0.09 |
| Urban | 28.89 | 0.26 | 30.59 | 0.41 | 28.46 | 0.25 |
| Rural/not in central city | 71.11 | 0.26 | 69.41 | 0.41 | 71.54 | 0.25 |
| Northeast | 19.67 | 0.08 | 18.57 | 0.15 | 19.95 | 0.10 |
| Midwest | 23.15 | 0.16 | 23.52 | 0.32 | 23.05 | 0.21 |
| South | 35.21 | 0.15 | 34.89 | 0.39 | 35.29 | 0.19 |
| West | 21.97 | 0.11 | 23.02 | 0.23 | 21.71 | 0.15 |
| Lifetime psychiatric disorders | ||||||
| Axis I disorders | ||||||
| Alcohol use | 30.43 | 0.20 | 33.57 | 0.39 | 29.63 | 0.20 |
| Substance use | 10.42 | 0.11 | 15.06 | 0.26 | 9.25 | 0.11 |
| Nicotine dependence | 17.47 | 0.13 | 24.33 | 0.37 | 15.73 | 0.13 |
| Anxiety disorder | 17.88 | 0.17 | 31.00 | 0.34 | 14.55 | 0.17 |
| Mood disorder | 21.09 | 0.13 | 41.82 | 0.33 | 15.82 | 0.13 |
| Attention deficit hyperactivity disorder | 2.51 | 0.06 | 5.82 | 0.19 | 1.67 | 0.05 |
| Axis II disorders | ||||||
| Borderline | 5.89 | 0.08 | 18.44 | 0.28 | 2.70 | 0.07 |
| Schizotypal | 3.93 | 0.06 | 11.20 | 0.24 | 2.09 | 0.05 |
| Narcissistic | 6.18 | 0.08 | 11.88 | 0.23 | 4.74 | 0.08 |
| Avoidant | 2.32 | 0.05 | 6.14 | 0.17 | 1.36 | 0.05 |
| Antisocial | 3.63 | 0.07 | 5.86 | 0.21 | 3.07 | 0.07 |
| Dependent | 0.43 | 0.02 | 1.36 | 0.09 | 0.19 | 0.01 |
| Obsessive-compulsive | 8.07 | 0.10 | 13.50 | 0.31 | 6.69 | 0.09 |
| Paranoid | 4.33 | 0.07 | 9.66 | 0.21 | 2.98 | 0.06 |
| Schizoid | 3.06 | 0.06 | 6.44 | 0.21 | 2.21 | 0.05 |
| Histrionic | 1.80 | 0.04 | 3.68 | 0.15 | 1.32 | 0.04 |
*
The sampling weight variable in wave 2 was used.
†
Respondents in NESARC wave 2 who reported low mood lasting 2 weeks or more during the 3-year interval covered in the wave 2 NESARC and were asked the three suicidal behaviour questions.
‡
Respondents in NESARC wave 2 who did not report low mood and were not asked the three suicidal questions.
NESARC, National Epidemiological Survey of Alcohol and Related Conditions.