Table 1

Demographic and clinical characteristics, including medication use as determined by the self-reported questionnaire and insurance claims

Mean (SD)Median (25th–75th centile)p Value*
Number54 712
Sex (men), N (%)†22 242 (40.7)
Age, years65.5 (7.8)68 (63−71)
Body mass index, kg/m222.9 (3.3)22.6 (20.7−27.8)
Equivalent income, 10 000 yen154 (242)117 (61−186)
Self-reported medication user, N (%)
 Hypertension†18 246 (33.4)
 Diabetes†3040 (5.6)
 Dyslipidaemia†12 489 (22.8)
Participants prescribed during 1 month, N (%)‡
 Hypertension†11 078 (20.3)<0.001
 Diabetes†2201 (4.0)<0.001
 Dyslipidaemia†7835 (14.3)<0.001
Participants prescribed during 3 months, N (%)§
 Hypertension†13 693 (25.0)<0.001
 Diabetes†2737 (5.0)<0.001
 Dyslipidaemia†9817 (17.9)<0.001
  • As of 30 June 2015, US$1 was equivalent to 122.72 yen.

  • *Comparison of the proportions of medication users as determined by insurance claims versus those from the self-reported questionnaire, using McNemar's test.

  • †Number (%) shown.

  • ‡Participants prescribed drugs during the same month as the health check-up according to insurance claims.

  • §Participants prescribed drugs during the month of check-up or the previous 2 months according to insurance claims.