Table 1

Characteristics of 57 558 normotensive participants at the 2005 Thai Cohort Study baseline

FactorMaleFemaleDifference
NPer centNPer centp Value*
Demographic data
 Participants25 32044.032 23856.0<0.0001
 Age (years) mean32.930.0<0.0001†
 (SD)(8.5)(7.6)
Age group (years)<0.0001
 ≤3011 29344.619 22959.6
 31–40917736.2963829.9
 >40485019.2337110.5
Married/partnered<0.0001
 No11 06044.818 85160.1
 Yes13 60755.212 51339.9
Regions<0.0001
 Bangkok348813.9605718.9
 Central571222.7826725.8
 North518020.6581818.1
 North-east614224.4576018.0
 East15156.019226.0
 South310312.3425413.3
Urbanisation status‡<0.0001
 Rural–rural (RR)11 51246.113 89543.6
 Rural–urban (RU)789131.6954629.9
 Urban–rural (UR)10784.313444.2
 Urban–urban (UU)449518.0711422.3
Socioeconomic status
 Education level<0.0001
  High school13 36652.913 13540.8
  Diploma574922.8979130.4
  University615324.4923128.7
 Personal monthly income (baht)§<0.0001
  ≤7000802532.313 89044.1
  7001–10 000579023.3757824.0
  10 001–20 000754930.4719422.8
  >20 000345213.928519.0
 Household assets¶ (baht) §<0.001
  Low985239.112 43438.7
  Medium806532.0986330.7
  High729828.9980430.5
  • *χ² Test.

  • †Unpaired t test.

  • ‡Location of residence (rural, R or urban, U) at age 10–12 years and again in 2005.

  • §At the time of the survey in 2009, US$1=31 Thai baht.

  • ¶Replacement value in Thai baht: low ≤30 000, medium 30 001–60 000 and high >60 000.