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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Psychol Med. 2020 Jan 7;50(3):367–383. doi: 10.1017/S003329171900391X

Table 3.

Moderator analyses for prevalence of passive suicidal ideation.

Time-frame k N Prevalence Analyses
b SE % 95% CI P
Lifetime
 Age 35 20,282 −.02 .01 -- -- .02
 % Female 49 33,518 .01 <.01 -- -- .10
 Measure Type .45
  Interview 44 11,1542 -- -- 24.72% 21.20% – 28.61%
  Questionnaire 13 11,294 -- -- 21.74% 15.85% – 29.06%
 Passive Suicidal Ideation Constructa -- -- -- -- -- -- --
1 Year
 Age 9 22,585 −.04 .01 -- -- <.001
 % Female 19 49,633 <.01 .01 -- -- .84
 Measure Type .13
  Interview 15 42,639 -- -- 13.38% 8.17% – 21.14%
  Questionnaire 22 45,633 -- -- 20.02% 15.69% – 25.19%
 Passive Suicidal Ideation Constructa .08
  “Pure” Passive Suicidal Ideation 5 19,785 -- -- 20.53% 16.25% – 25.58%
  Not “Pure” Passive Suicidal Ideation 30 68,368 -- -- 14.86% 11.07% – 19.67%
1 Month
 Age 15 58,783 −.04 .01 -- -- <.001
 % Female 24 41,638 <.01 .01 -- -- .73
 Measure Type .20
  Interview 15 12,887 -- -- 19.16% 10.17% – 33.16%
  Questionnaire 11 57,480 -- -- 11.63% 7.37% – 17.88%
 Passive Suicidal Ideation Constructa .12
  “Pure” Passive Suicidal Ideation 6 7,112 -- -- 9.07% 4.14% – 18.73%
  Not “Pure” Passive Suicidal Ideation 18 63,136 -- -- 17.68% 11.80% – 25.62%
1 Week/Current
 Age 12 4,279 −.02 .02 -- -- .22
 % Female 19 13,119 <.01 .01 -- -- .79
 Measure Type .31
  Interview 11 9,856 -- -- 9.75% 3.37% – 25.09%
  Questionnaire 15 12,357 -- -- 17.30% 10.43% – 27.31%
 Passive Suicidal Ideation Constructa .80
  “Pure” Passive Suicidal Ideation 7 1,225 -- -- 15.69% 8.65% – 26.78%
  Not “Pure” Passive Suicidal Ideation 17 20,869 -- -- 14.16% 7.88% – 24.14%

Note. CI = confidence interval; k = number of unique effects; N = total number of subjects included in pooled analyses

a

In moderator analyses of the construct of passive suicidal ideation, prevalence of “pure” passive suicidal ideation was based only on individuals who endorsed passive but not active suicidal ideation; studies were considered conservatively not to have assessed “pure” passive suicidal ideation if they either included individuals with active ideation in their assessment of passive ideation or were unclear as to whether that decision was made. For lifetime passive suicidal ideation, only one study with two unique effects for “pure” passive suicidal ideation was available for lifetime prevalence of passive suicidal ideation, and thus moderator analysis was not conducted.