Table 1. Descriptive statistics.
| USA (63.21% female) |
Argentina (65.72% female) |
Spain (66.86% female) |
USA-Arg | USA-Sp | Arg-Sp | Whole sample (64.78% female) |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | Mean (SD) | N | Mean (SD) | N | Mean (SD) | d | d | d | N | Mean (SD) | |
| Age | 1090 | 19.05 (2.27) | 352 | 24.26 (5.46) | 688 | 21.42 (3.97) | -1.24 | -.73 | .59 | 2130 | 20.68 (4.03) |
| Openness | 1117 | 2.66 (.63) | 353 | 2.97 (.67) | 688 | 2.76 (.69) | -.48 | -.15 | .31 | 2158 | 2.74 (.66) |
| Extraversion | 1117 | 2.55 (.78) | 353 | 2.45 (.78) | 688 | 2.54 (.74) | .13 | .01 | -.12 | 2158 | 2.53 (.77) |
| Agreeableness | 1117 | 2.59 (.60) | 353 | 2.71 (.59) | 688 | 2.71 (.61) | -.20 | -.20 | .00 | 2158 | 2.66 (.60) |
| Conscientiousness | 1117 | 2.44 (.63) | 353 | 2.38 (.60) | 688 | 2.34 (.66) | .10 | .15 | .06 | 2158 | 2.40 (.63) |
| Emotional stability | 1117 | 1.97 (.74) | 353 | 1.88 (.84) | 688 | 2.03 (.78) | .11 | -.09 | -.19 | 2158 | 1.97 (.77) |
| Depression | 1112 | 1.25 (1.06) | 353 | 1.60 (1.03) | 688 | 1.61 (.92) | -.33 | -.36 | -.01 | 2153 | 1.42 (1.02) |
| Anger | 1111 | 1.17 (1.09) | 353 | 1.39 (1.14) | 688 | 1.36 (.99) | -.20 | -.18 | .03 | 2152 | 1.27 (1.07) |
| Mania | 1112 | .99 (.93) | 353 | 1.08 (.87) | 688 | 1.29 (.94) | -.10 | -.32 | -.23 | 2153 | 1.10 (.94) |
| Anxiety | 1112 | 1.17 (1.03) | 353 | 1.19 (.94) | 688 | 1.06 (.83) | -.02 | .12 | .15 | 2153 | 1.14 (.95) |
| Somatic distress | 1112 | .78 (.96) | 353 | 1.00 (1.00) | 688 | .87 (.87) | -.22 | -.10 | .14 | 2153 | .84 (.94) |
| Suicidal ideation | 1111 | .39 (.88) | 353 | .38 (.91) | 688 | .32 (.79) | .01 | .08 | .07 | 2152 | .37 (.86) |
| Psychosis | 1112 | .24 (.65) | 353 | .11 (.40) | 688 | .17 (.49) | .24 | .12 | -.13 | 2153 | .20 (.57) |
| Sleep disturbance | 1111 | 1.00 (1.18) | 353 | 1.03 (1.23) | 688 | 1.13 (1.15) | -.02 | -.11 | -.08 | 2152 | 1.05 (1.18) |
| Memory | 1112 | .61 (.97) | 353 | .59 (.95) | 688 | .53 (.87) | .02 | .09 | .07 | 2153 | .58 (.93) |
| Repetitive thoughts | 1112 | .56 (.88) | 353 | .62 (.91) | 688 | .47 (.79) | -.07 | .11 | .18 | 2153 | .54 (.86) |
| Dissociation | 1110 | .64 (1.02) | 353 | .63 (1.05) | 688 | .56 (.93) | .01 | .08 | .07 | 2151 | .61 (1.00) |
| Personality functioning | 1112 | .96 (1.06) | 353 | 1.01 (1.04) | 688 | .99 (1.00) | -.05 | -.03 | .02 | 2153 | .98 (1.04) |
| Alcohol use | 1106 | .57 (.89) | 353 | .46 (.75) | 688 | .33 (.66) | .13 | .31 | .18 | 2147 | .48 (.81) |
| Tobacco use | 1109 | .44 (.95) | 353 | .59 (1.23) | 688 | .63 (1.23) | -.14 | -.17 | -.03 | 2150 | .53 (1.10) |
| Illicit drug use | 1110 | .39 (.89) | 353 | .36 (.79) | 688 | .25 (.65) | .04 | .18 | .15 | 2151 | .34 (.81) |
| Total mental health score | 1112 | .79 (.68) | 353 | .86 (.56) | 688 | .83 (.51) | -.11 | -.07 | .06 | 2153 | .82 (.61) |
| Antisocial behavior | 1109 | 1.22 (.32) | 346 | 1.24 (.20) | 675 | 1.26 (.26) | -.07 | -.14 | -.09 | 2130 | 1.24 (.28) |
| Negative marijuana-related consequences | 441 | .16 (.20) | 142 | .17 (.17) | 148 | .21 (.19) | -.05 | -.27 | -.22 | 731 | .17 (.19) |
| Marijuana frequency | 1117 | 4.16 (8.26) | 353 | 3.54 (7.22) | 688 | 1.80 (5.61) | .08 | .33 | .27 | 2158 | 3.30 (7.41) |
| Marijuana quantity | 444 | 7.16 (17.37) | 142 | 6.09 (15.14) | 148 | 7.41 (20.90) | .07 | -.01 | -.07 | 734 | 7.01 (17.73) |
| Rumination | 1111 | 3.97 (1.31) | 353 | 3.69 (1.41) | 688 | 4.02 (1.28) | .21 | -.04 | -.25 | 2152 | 3.94 (1.32) |
| Happiness | 1106 | 7.80 (2.02) | 351 | 7.63 (1.90) | 678 | 7.71 (1.66) | .09 | .05 | -.04 | 2135 | 7.75 (1.89) |
Cohen’s d values of .20 .50 and .80 correspond to small, medium and large effect sizes, respectively [28].