Table 3

Seasonal differences in mental distress
Season for attending the study
Polar night Spring Polar day Autumn χ21 p1
HSCL-10 score 1.26 (0.36)2 1.25 (0.35)2 1.27 (0.37)2 1.27 (0.37)2 5.514 0.3189
High mental distress3 206 (7.7)4 107 (6.6)4 97 (8.0)4 180 (7.3)4 2.767 0.420

1Kruskal-Wallis test.

2Mean (SD).

3HSCL10 score≥1.85.

4Number (%).

Johnsen et al.

Johnsen et al. BMC Psychiatry 2012 12:225   doi:10.1186/1471-244X-12-225

Open Data