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Table 3 Paired T-tests comparing drug use

From: Simultaneous alcohol and cannabis expectancies predict simultaneous use

Alcohol/Cannabis Pairs Mean SD Relevant t values
All Alcohol Per Month M = 42.4 SD = 55.4 t(2573) = 24.0**
Only Alcohol Per Month M = 20.47 SD = 42.3  
All Alcohol Per Month M = 42.4 SD = 55.4 t(2574) = 16.3**
Simultaneous Drinks Per Month M = 28.7 SD = 49.4  
Only Alcohol Per Month M = 20.47 SD = 42.3 t(2558) = 8.1**
Simultaneous Drinks Per Month M = 28.7 SD = 49.4  
All Cannabis Per Month M = 2.8 SD = 1.5 t(2585) = 3.4**
Only Cannabis Per Month M = 2.6 SD = 1.3  
All Cannabis Per Month M = 2.8 SD = 1.5 t(2572) = 32.4**
Simultaneous Cannabis Per Month M = 1.9 SD = 1.3  
Only Cannabis Per Month M = 2.6 SD = 1.3 t(2543) = 29.4**
Simultaneous Cannabis Per Month M = 1.9 SD = 1.3  
  1. Note. * p < .05. ** p < .01