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Table 1 Baseline characteristics of the study groups

From: A randomised controlled trial to measure the effect of chest pain unit care upon anxiety, depression, and health-related quality of life [ISRCTN85078221]

  CPU care Routine care
Age (years) 49.4 49.6
Male sex (%) 304 (63.5%) 318 (64.5%)
Known CHD (%) 16 (3.3%) 27 (5.5%)
Hypertension (%) 127 (26.5%) 120 (24.3%)
Diabetes (%) 17 (3.5%) 29 (5.9%)
Hyperlipidaemia (%) 58 (12.1%) 70 (14.2%)
Smoker (%) 169 (35.3%) 143 (29.0%)
Family history (%) 189 (39.5%) 200 (40.6%)
Pain nature   
Indigestion / burning 60 (12.5%) 56 (11.4%)
Stabbing / sharp 116 (24.2%) 113 (22.9%)
Aching / dull / heavy 175 (36.5%) 181 (36.7%)
Gripping / crushing 66 (13.8%) 59 (12.0%)
Other 57 (11.9%) 71 (14.4%)
Pain site   
Central 317 (66.2%) 335 (68.0%)
Left chest 129 (26.9%) 125 (25.4%)
Right chest 19 (4.0%) 16 (3.2%)
Other 8 (1.7%) 8 (1.6%)
Pain radiation   
None 183 (38.2%) 189 (38.3%)
Left arm 118 (24.6%) 142 (28.8%)
Right arm 31 (6.5%) 26 (5.3%)
Neck 22 (4.6%) 22 (4.5%)
Jaw 15 (3.1%) 13 (2.6%)
Back 70 (14.6%) 53 (10.8%)
Other 27 (5.6%) 30 (6.1%)
Pain duration   
Continuous pain 312 (65.1%) 341 (69.2%)
Intermittent pain 93 (19.4%) 95 (19.3%)
Other symptoms   
Nausea 129 (26.9%) 161 (32.7%)
Vomiting 25 (5.2%) 31 (6.3%)
Dyspnoea 185 (38.6%) 202 (41.0%)
Sweating 192 (40.1%) 210 (42.6%)
ECG at presentation   
ECG normal (%) 412 (89.0%) 382 (82.2%)
ECG non-specific (%) 38 (8.2%) 64 (13.8%)
ECG old change (%) 13 (2.8%) 19 (4.1%)
Source of referral   
GP referral 138 (28.8%) 116 (23.5%)
Self referred 173 (36.1%) 155 (31.4%)
999 145 (30.3%) 189 (38.3%)
Other 23 (4.8%) 33 (6.7%)