The Relationship between Individual Personality Traits (Internality-Externality) and Psychological Distress in Employees in Japan

Table 3

Scores of Kessler 6 (K6) psychological distress scale by sex and age distribution.

Age	All participants	Males	Females
	Mean ± SD	Mean ± SD	Mean ± SD
≤29*	6.58±5.24	5.84±5.37	6.97±5.13
30–39^†	6.26±5.23	6.39±5.56	6.18±5.04
40–49^†	5.91±4.96	5.77±5.08	6.00±4.90
≥50**	4.93±4.45	4.41±4.25	5.58±4.62
Total**	5.91±5.01	5.48±5.06	6.21±4.96

Significance scores representing the differences between males and females (Mann-Whitney U test).
* 𝑃<0.05,** 𝑃<0.01, ^†not significant.