Table 3.

Mental health profiles among 15-year-olds obtained by cluster analysis, aggregated over the years 2002–2018.

Four cluster profiles:	Perceived good health	Perceived poor health	High symptoms	Poor mental health
Psychosomatic symptomsb	−0.78	−0.08	0.67	1.78
Overall healthb	0.56	−1.80	−0.03	−1.67
N	2,902	436	2,171	471
%	48.5	7.3	36.3	7.9
Boys %	63.3t	6.6	26.2a	3.9a
Girls %	34.5a	8.0	45.8t	11.7t

The cluster analysis combines all 5 data collections with N = 1,196 each year. Sex differences are examined with the EXACON program.

^t = type, cell frequency more often than expected by chance;

^a = antitype, cell frequency less often than expected by chance.

^bLow value is < -0.70, Average value is between −0.70 and 0.70, High value is >0.70.

Sex differences: Chi² (3 df) = 530.90, p < 0.001; contingency coefficient = 0.29.