|
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]