| | Self-reported | RAN | PHQ-BIN | PHQ-ORD | ALL-BIN | ALL-ORD |
|---|
True negative | 60,475 | 58,032 (57,873–58,192) | 58,965 (58,815–59,114) | 58,103 (57,955–58,251) | 59,001 (58,844–59,157) | 58,137 (57,985–58,288) |
True positive | 2553 | 104 (73–134) | 861 (778–944) | 1611 (1530–1693) | 967 (885–1049) | 1689 (1606–1772) |
False negative | – | 2450 (2352–2548) | 1692 (1592–1792) | 942 (877–1006) | 1587 (1492–1682) | 865 (803–927) |
False positive | – | 2442 (2313–2571) | 1510 (1394–1626) | 2372 (2257–2487) | 1473 (1348–1598) | 2338 (2218–2457) |
Prevalence | 4.05 | 4.04 (3.79–4.29) | 3.77 (3.44–4.08) | 6.32 (6.01–6.64) | 3.87 (3.55–4.20) | 6.39 (6.07–6.71) |
Sensitivity | – | 4 (3–5) | 34 (31–37) | 63 (61–65) | 38 (35–41) | 66 (64–68) |
Specificity | – | 96 (96–96) | 98 (97–98) | 96 (96–96) | 98 (97–98) | 96 (96–96) |
PPV | – | 4 (3–5) | 36 (34–39) | 40 (39–42) | 40 (37–42) | 42 (40–44) |
NPV | – | 96 (96–96) | 97 (97–97) | 98 (98–99) | 97 (97–98) | 99 (98–99) |
CPU time | – | – | 2:32:48.60 | 2:26:04.96 | 70:55:18.03 | 71:09:58.09 |
- CPU: central processing unit; reported in hours, minutes, seconds; NPV: negative predictive value; PCL-C, PTSD Checklist−Civilian Version; PHQ, Patient Health Questionnaire; PPV: positive predictive value; PTSD, posttraumatic stress disorder
- Self-reported suicidal ideation was indicated if reported “several days” or more to “thoughts that you would be better off dead or hurting yourself in some way”
- RAN: suicidal ideation was randomly assigned in line with the prevalence observed in the sample in 2007
- PHQ-BIN model: treated suicidal ideation as a dichotomous variable and included the remaining 8 PHQ items in the imputation model
- PHQ-ORD model: treated suicidal ideation as a 4-level variable and included the remaining 8 PHQ items in the imputation model
- ALL-BIN model: treated suicidal ideation as a dichotomous variable and included the 8 PHQ items and previously identified factors from the literature: sex, age, race/ethnicity, marital status, education attainment, 10 individual items from the RAND physical functioning module, 17 individual items and PTSD screener from the PCL-C, smoking status, sleep duration, and 5 alcohol use items from the PHQ [27,28,29,30]
- ALL-ORD model: treated suicidal ideation as a 4-level variable and included the 8 PHQ items and previously identified factors from the literature: sex, age, race/ethnicity, marital status, education attainment, 10 individual items from the RAND physical functioning module, 17 individual items and PTSD screener from the PCL-C, smoking status, sleep duration, and 5 alcohol use items from the PHQ [27,28,29,30]
