Table 1

Characteristics of individuals without hypertension (HTN) at baseline, stratified by HTN status on follow-up (n=3199)

CharacteristicDistribution at baseline
N=3199/person-time
No HTN on follow-up
(n=3029)
Developed HTN on follow-up
(n=170)
P valueIncidence rate per 100 person-years of follow-up
Age group<0.001
<442013/2637.991944 (97%)69 (3.4%)2.61 (2.03 to 3.31)
45–59900/1141.16828 (92%)72 (8.0%)6.3 (4.9 to 7.94)
60+286/360.34257 (90%)29 (10%)8.04 (5.38 to 11.55)
Gender0.003
Men1262/1582.781176 (93%)86 (6.8%)5.43 (4.37 to 6.67)
Women1937/2556.701853 (96%)84 (4.3%)3.28 (2.62 to 4.06)
Education<0.001
Literate2290/3003.952194 (96%)96 (4.2%)3.19 (2.58to3.90)
Illiterate909/1135.53835 (92%)74 (8.1%)6.51 (5.11 to 8.18)
Wealth quintiles0.007
T1847/1085.05791 (93%)56 (7%)5.16 (3.89 to 6.70)
T2986/1242.91929 (94%)57 (6%)4.58 (3.47 to 5.94)
T31216/1644.171171 (96%)45 (4%)2.73 (1.99 to 3.66)
BMI classification0.107
≤18.50308/394.79298 (97%)10 (3.2%)2.53 (1.21 to 4.65)
18.51–25.001400/1849.401331 (95%)69 (4.9%)3.73 (2.90 to 4.72)
25.01–30.00663/895.88625 (94%)38 (5.7%)4.24 (3.00 to 5.82)
30.01+201/267.49185 (92%)16 (8.0%)5.98 (3.41 to 9.71)
Leisure time physical activity0.815
Non-sedentary691/810.48656 (95%)35 (5.1%)4.31 (3.00 to 6.00)
Sedentary2508/3329.012373 (95%)135 (5.4%)4.05 (3.40 to 4.79)
Abdominal obesity0.180
Non-obese1654/2075.441575 (95%)79 (4.8%)3.80 (3.01 to 4.74)
Obese1541/2059.871450 (94%)91 (5.9%)4.41 (3.55 to 5.42)
Alcohol0.004
Non-user2626/3454.212501 (95%)125 (4.8%)3.61 (3.01 to 4.31)
User573/685.28528 (92%)45 (7.9%)6.56 (4.78 to 8.78)
Tobacco0.001
Non-user2072/2751.271982 (96%)90 (4.3%)3.27 (2.63 to 4.02)
User1127/1388.221047 (93%)80 (7.1%)5.76 (4.56 to 7.17)
Current smokers0.375
Non-smokers3063/3972.672903 (95%)160 (5.2%)4.02 (3.42 to 4.70)
Smokers136/166.81126 (93%)10 (7.4%)5.99 (2.87 to 11.02)
BP status 2017<0.001
Normal1836/2359.261782 (97%)54 (2.9%)2.28 (1.71 to 2.98)
Prehypertension1363/1780.231247 (91%)116 (8.5%)6.51 (5.38 to 7.81)
Dysglycaemia 20170.616
Absent2753/3561.982604 (95%)149 (5.4%)3.63 (2.25 to 5.55)
Present446/577.50425 (95%)21 (4.7%)4.18 (3.53 to 4.91)
Follow-up years1.25 (1.08–1.60)1.25 (1.08–1.60)1.23 (1.09–1.51)0.532
  • BMI, body mass index; BP, blood pressure.