Table 1.
Included study information.
| Study name | Population size at follow-up | NSSI participants | Sample type | Population | Sample ages (range, mean, SD) | NSSI binary or continuous | Length of study (months) |
|---|---|---|---|---|---|---|---|
| *Andrews, Martin, Hasking, and Page (2013) | 1937 Australian students | 57a | General | Adolescent | 12–17 years, Mean (SD) = 14.9 (0.96) | Binary | 12 |
| *Anestis et al. (2012) | 127 people meeting BN criteria | Unclear | High risk | Adult | 18–55 years, Mean (SD) = 25.34 (7.71) | Continuous | 0.46 |
| *Cox et al. (2012) | 352 offspring of parents with mood disorders | 26 | High risk | Adolescent and adult | 10 + years, Mean (SD) = 17.9 (6.9) | Binary | 12–96, Mean (SD) = 45.6 (21.6) |
| *Franklin et al. (2014) | 49 adults with self-cutting history | 24 | History of NSSI | Adult | Mean (SD) = 24 (8.28) | Continuous | 6 |
| Glenn and Klonsky (2011) | 51 adults with NSSI history | 32 | History of NSSI | Adult | Mean (SD) = 18.96 (1.57) | Continuous | 12 |
| *Guerry and Prinstein (2009) | 102 inpatient adolescents | 24 females, 5 males | High risk | Adolescent | 12–15 years, Mean (SD) = 13.51 (0.75) | Continuous | 18 |
| *Hankin and Abela (2011) | 97 community adolescents | 18 | General | Adolescent | 11–14 years, Mean (SD) = 12.63 (1.25) | Binary | 30 |
| *Lundh et al. (2013) | 452 middle-school girls, 434 middle-school boys | 26 females, 21 males | General | Adolescent | 13–15 years (no mean provided) | Continuous | 12 |
| *Lundh, Wångby-Lundh, and Bjärehed (2011) | 452 middle-school girls, 434 middle-school boys | 26 females, 21 males | General | Adolescent | 13–15 years (no mean provided) | Binary | 12 |
| *Marshall et al. (2013) | 506 Swedish middle-school students | Unclear | General | Adolescent | 12–14 years, Mean (SD) = 13.21 (0.57) | Continuous | 24 |
| *Martin, Thomas, Andrews, Hasking, and Scott (2014) | 1975 Australian students | 58a | General | Adolescent | 12–17 years, Mean (SD) = 14.87 (0.95) | Binary | 12 |
| *Prinstein et al. (2010)–Study 1 | 377 middle-school adolescents | Unclear | General | Adolescent | 6-8th grade (no mean provided) | Continuous | 12 |
| *Prinstein et al. (2010)–Study 2 | 102 psychiatric inpatient adolescents | 24 females, 5 males | High risk | Adolescent | 12–15 years, Mean (SD) = 13.51 (0.81) | Continuous | 18 |
| *Roaldset, Linaker, and Bjørkly (2012) | 307 psychiatric inpatients in Norway | 10 | High risk | Adult | Mean = 44 (no range provided) | Binary | 12 |
| *Selby, Franklin, Carson-Wong, & Rizvi, 2013 | 47 individuals high in dysregulated behaviors | 7 | High risk | Adult | Mean (SD) = 35 (15.87) | Continuous | 0.46 |
| Tatnell, Kelada, Hasking, and Martin (2013) | 1973 Australian students | 75a | General | Adolescent | 12–18 years, Mean (SD) = 13.89 (0.97) | Binary | 12 |
| *Tuisku et al., 2014 | 137 Finnish depressed adolescents | 22 | High risk | Adolescent and adult | 13–19 years, Mean (SD) = 16.5 (1.59) | Binary | 96 |
| *Van der Kolk, Christopher, and Perry (1991) | 74 personality and mood disorder patients | 9 | General | Adult | 18–39 years | Continuous | 24–108, Mean = 48 |
| *Wilkinson et al. (2011) | 163 depressed adolescents | 57 | High risk | Adolescent | 11–17 years, Mean (SD) = 14.2 (1.2) | Binary | 6.44 |
| *Zanarini et al. (2008) | 262 personality disorder patients | 40 | High risk | Adult | 18–35 years, Mean (SD) = 27 (6.3) | Binary | 24 |
| Total unique participants: | 5078 |
a
236 total participants engaged in NSSI at T2; however, only new, or “incident” cases, were included in analyses