Variation in somatic symptoms by patient health questionnaire-9 depression scores in a representative Japanese sample

Table 6 Eigenvalues, coefficient alphas, and cumulative variance explained

Self-reported symptoms	Factor
Self-reported symptoms	1	2	3	4	5
neck and upper shoulder discomfort	.61
shoulder pain	.57
headache	.50
low back pain	.47
cough		.73
fever		.63
sore throat		.61
generalised abdominal pain			.74
diarrhea			.71
fatigue and somnolence				.79
general weakness and malaise				.70
knee pain					.67
foot pain					.48
Eigen value	4.34	1.27	1.23	0.97	0.93
Cumulative variance explained	0.31	0.40	0.49	0.56	0.62

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