Correction to: npj Schizophrenia (2015) 1, Article number: 15025. doi:10.1038/npjschz.2015.25
In the published version of this article, in Table 1, under the entry ‘Cannabis use’, some N (%) data were incorrect due to a minor miscalculation. The corrected table appears below. The authors regret the error.
Table 1. Demographic measures and patterns of drug use in FEP patients and control subjects.
|
PZ
|
Controls
|
|||
|---|---|---|---|---|
| N | % | N | % | |
|
Cannabis use
| ||||
| Yes | 158 | 71.2 | 142 | 62.3 |
| No risk allele | 34 | 21.5 | 40 | 28.2 |
| One risk allele | 89 | 56.3 | 82 | 57.7 |
| Two risk alleles | 35 | 22.2 | 20 | 14.1 |
| Never | 64 | 28.8 | 86 | 37.7 |
| No risk allele | 20 | 31.2 | 17 | 19.8 |
| One risk allele | 35 | 54.7 | 51 | 59.3 |
| Two risk alleles | 9 | 14.1 | 18 | 20.9 |
|
Frequency of use
| ||||
| Daily | 92 | 63.9 | 43 | 39.8 |
| No risk allele | 19 | 20.7 | 12 | 27.9 |
| One risk allele | 51 | 55.4 | 22 | 51.2 |
| Two risk alleles | 22 | 23.9 | 9 | 20.9 |
| Weekly or less | 52 | 36.1 | 65 | 60.2 |
| No risk allele | 12 | 23.1 | 20 | 30.8 |
| One risk allele | 29 | 55.7 | 37 | 56.9 |
| Two risk alleles | 11 | 21.2 | 8 | 12.3 |
| No details | 14 | 34 | ||