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Sites and sample sizes for the Ontario Incidence Study of Reported Child Abuse (OIS) Cycles
| OIS-1993 | OIS-1998 | OIS-2003 | OIS-2008 | OIS-2013 | |
|---|---|---|---|---|---|
| Site selection (sample/total) | 15/51 | 13/53 | 16/53 | 23/53 | 17/46 |
| Case selection | 1898 | 2193 | 4175 | 4415 | 3118 |
| Investigated children | 2447 | 3053 | 7172 | 7471 | 5265 |
| Estimate of child maltreatment investigations | 46,683 | 64,658 | 128,108 | 128,748 | 125,281 |
