Table 2: Distribution of scores for the Mood Disorder Questionnaire items by diagnosis.

MDD
n° = 89		 BD
n° = 62		 Mann-Whitney U test Cliff’s delta
Item Mean * SD Mean * SD
1. So hyper to get into trouble 0.25 0.43 0.81 0.39 Z=-6.74, p<0.0001 0.56
2. Irritable 0.70 0.46 0.84 0.37 Z=-1.94, p=0.052 0.12
3. More self-confident 0.33 0.47 0.85 0.35 Z=-6.28, p<0.0001 0.50
4. Less sleep 0.47 0.50 0.81 0.39 Z=-4.19, p<0.0001 0.34
5. More talkative 0.34 0.47 0.80 0.40 Z=-5.59, p<0.0001 0.44
6. Thoughts raced 0.69 0.46 0.81 0.39 Z=-1.65, p=0.098 0.12
7. Easily distracted 0.75 0.43 0.84 0.37 Z=-1.22, p=0.223 0.11
8. Much more energy 0.40 0.49 0.90 0.29 Z=-6.16, p<0.0001 0.49
9. Much more active 0.37 0.48 0.87 0.33 Z=-6.10, p<0.0001 0.51
10. Much more social 0.13 0.34 0.66 0.47 Z=-6.64, p<0.0001 0.51
11. Much more interested in sex 0.17 0.37 0.55 0.50 Z=-4.89, p<0.0001 0.39
12. Excessive, foolish or risky things 0.23 0.42 0.55 0.50 Z=-4.02, p<0.0001 0.30
13. Spending money got into trouble 0.42 0.49 0.75 0.43 Z=-4.08, p<0.0001 0.33

MDD = Major Depressive Disorder; BD = Bipolar Disorder.

SD = Standard Seviation.

*For dichotomous items, item mean multiplied by 100 gives the percentage of “yes” responding.

**Large effect sizes were marked in bold.