Table 1

Characteristics of hypertension patients

Exposure group
 Comparison group


N
 %
 N
 %
Beta blocking agents
Number of patients
 553
 1064
 511
Gender



     Male
 280
 50.63
 258
 50.49
     Female
 273
 49.37
 253
 49.51
Birth year



     1960 or after
 16
 2.89
 21
 4.11
     1940–1959
 219
 39.60
 224
 43.84
     1920–1939
 294
 53.16
 248
 48.53
     1919 or before
 24
 4.34
 18
 3.52
Calcium channel blockers, vascular effects
Number of patients
 635
 1202
 567
Gender



     Male
 332
 52.28
 299
 52.73
     Female
 303
 47.72
 268
 47.27
Birth year



     1960 or after
 14
 2.20
 17
 3.00
     1940–1959
 215
 33.86
 213
 37.57
     1920–1939
 361
 56.85
 316
 55.73
     1919 or before
 45
 7.09
 21
 3.70
ACE inhibitors, plain
Number of patients
 272
 560
 288
Gender



     Male
 155
 56.99
 179
 62.15
     Female
 117
 43.01
 109
 37.85
Birth year



     1960 or after
 9
 3.31
 10
 3.47
     1940–1959
 112
 41.18
 92
 31.94
     1920–1939
 132
 48.53
 169
 58.68
     1919 or before
 19
 6.99
 17
 5.90

Chen et al. BMC Public Health 2008 8:118   doi:10.1186/1471-2458-8-118