Table 1.
Patients | Controls | Test statistic | |
---|---|---|---|
N | 49 | 52 | |
Age range | 19–49 years | 18–47 years | |
Age mean + SD | 32.4 ± 7.5 years | 28.5 ± 7.0 years | t2.66, df99, p = 0.010 |
M:F (absolute) | 42:7 | 39:13 | |
M:F (pct) | 86:14 | 75:25 | χ1.82, p = 0.177 |
BMI mean + SD | 24.9 ± 4.0 | 23.9 ± 3.7 | t1.29, p = 0.201 |
Smoking | 63.8% | 5.9% | χ36.77, p < 0.001 |
THC use prior to study (heavy use defined as more than three times per week) | 18.8% light 20.8% heavy | 3.9% light | χ19.5, p < 0.001 |
Duration of illness | 6.1 ± 5.9 years | ||
1st episode | 26.1% | ||
Acute psychosis (n = 46) | At follow-up (n = 39) | ||
PANSS total score | 83.4 ± 14.6 | 59.1 ± 12.1 | t10.9, df37, p < 0.001 |
PANSS positive scale score | 24.8 ± 5.0 | 10.8 ± 2.9 | t17.9, df37, p < 0.001 |
PANSS negative scale score | 18.4 ± 7.4 | 17.2 ± 7.0 | t1.3, df37, p = 0.197 |
PANSS general psychopathology scale score | 40.6 ± 7.9 | 30.9 ± 7.1 | t6.9, df37, p < 0.001 |
SDST score (numbers correct) | 44.0 ± 12.0 | 48.0 ± 11.7 | t2.84, df37, p = 0.008 |
LNS adjusted score | 5.0 ± 2.2 | 5.2 ± 2.4 | t0.77, df37, p = 0.446 |
Data are expressed as mean values ± SD.