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Table 2 Comparison of trials included and pooled in 5 systematic reviews of depression screening

From: Analysis of decisions made in meta-analyses of depression screening and the risk of confirmation bias: A case study

Reference N Favors screening Gilbody, 2001[10] Gilbody, 2005[8] Gilbody, 2008[9] USPTF, 2002[12, 13] USPTF, 2009[14, 15]
Search date    2000 2004 2007 2001 2007
    Incl Pool Incl Pool Incl Pool Incl Pool Incl Pool
Johnstone, 1976 [16] 1093 ++ yes no no no yes no yes no yes no
Moore, 1978 [17] 212 + yes yes yes yes yes yes yes no yes no
Linn, 1980 [18] 150 + yes no yes yes yes yes yes no yes no
Zung & Magill, 1983 [19] 143 ++ no no yes no yes no no no yes no
Zung & King, 1983 [20] 49 ++ no no no no no no yes yes no no
Hoeper, 1984 [21] 1452 - yes yes yes yes yes yes no no no no
German, 1987 [22] 488 + yes yes yes yes yes yes no no no no
Magruder-Habib, 1990 [23] 100 ++ yes yes yes yes yes yes yes no yes no
Callahan, 1994 [24] 175   no no yes yes yes no yes yes yes no
Dowrick, 1995 [25] 179 - yes no yes yes yes yes yes no yes no
Callahan, 1996 [26] 222 - no no no no yes yes yes yes yes no
Lewis, 1996 [27] 681 + yes no yes yes yes yes yes yes yes no
Mazonson, 1996 [28] 573 ++ yes no no no no no no no no no
Reilfer, 1996 [29] 358 + no No no no no no yes no no no
Williams, 1999 [30] 969 + no no yes yes yes yes yes yes yes no
Katzelnick, 2000 [31] 407 ++ no no no no no no yes yes yes no
Weatherall, 2000 [32] 100 - no no yes yes yes yes no no no no
Wells, 2000 [33] 1356 ++ no no no no no no yes yes yes no
Whooley, 2000 [34] 331 - no no yes yes yes yes yes yes yes no
Rost, 2001 [35] 479 ++ no no no no no no yes no yes no
Schriger, 2001 [36] 218 - no no no no yes yes no no no no
Christensen, 2003 [37] 1785 + no no no no yes yes no no no no
Jarjoura, 2004 [38] 61 ++ no no no no no no no no yes no
Bergus, 2005 [39] 51 - no no no no yes yes no no no no
Bosmans, 2006 [40] 145 - no no no no no no no no yes no
Rubenstein, 2007 [41] 792 + no no no no no no no no yes no
  1. N = Total number in the trial at baseline (control and intervention arms).
  2. Incl = Included for any or all of three outcomes (recognition, management, outcome of depression).
  3. Pool = Pooled for any or all of three outcomes (recognition, management, outcome of depression).
  4. Cells shaded where study was not available for review with that search date.
  5. USPTF = US Preventive Task Force.