Comparison of self-reported scales and structured interviews for the assessment of depression in an urban male working population in Japan: a cross-sectional survey

Table 1 Characteristics of study population

Variable	Total eligible sample	Participants	Non-participants	P-value
n	396	324	72
Age, years	44.2 ± 8.42	43.8 ± 8.37	45.7 ± 8.56	0.089
BMI, kg/m²	23.6 ± 3.03	23.7 ± 3.07	23.2 ± 2.85	0.208
ESS	8.0 ± 4.3	8.1 ± 4.3	7.6 ± 4.4	0.305
PSQI	4.7 ± 2.0	4.8 ± 2.0	4.2 ± 1.9	0.011
TST, hour	5.9 ± 0.86	5.9 ± 0.85	6.0 ± 0.89	0.748
SF-36 PF	53.8 ± 6.28	53.8 ± 6.41	54.0 ± 5.69	0.746
RP	52.1 ± 7.80	52.3 ± 7.30	51.2 ± 9.71	0.332
BP	51.4 ± 9.63	51.4 ± 7.27	51.5 ± 11.2	0.893
GH	51.2 ± 8.88	51.0 ± 9.05	52.1 ± 8.07	0.341
VT	50.5 ± 8.54	50.2 ± 8.24	52.0 ± 9.71	0.110
SF	52.7 ± 8.00	52.8 ± 7.78	52.3 ± 8.97	0.620
RE	51.7 ± 7.90	51.5 ± 7.76	52.1 ± 8.54	0.567
MH	50.6 ± 8.90	50.6 ± 8.76	51.0 ± 9.57	0.715

Independent t-tests were performed to compare continuous data between participants and non-participants. The total sleep time (TST) was obtained from the questionnaire
PSQI Pittsburgh Sleep Quality Index, ESS Epworth sleepiness scale; Medical Outcomes Study 36-item Health Survey (SF-36), PF physical functioning, RP role limitations due to physical health (role-physical); BP, bodily pain, GH general health perceptions, VT vitality, SF social functioning, RE role limitations due to emotional problems (role-emotional); and MH mental health

ISSN: 2398-2683