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Chapter 37, Question 1.
Presentation of tables
Consider the following table which summarises some results from Stammler et al (J Hum Hypertens 1993; 7: 429-35).
Life style variations in three INTERSALT centres (Beijing, Nanning and Tianjin) in the People's Republic of China compared with 45 other INTERSALT centres, standardised for age/sex/centre.
| Variable | 3 PRC centres | 45 other centres |
| 24h sodium excretion (mmol, mean) | 206.3 (70.9) | 163.0 (62.8) |
| Alcohol drinkers (%) | 31.8 | 61.1 |
| Alcohol in drinkers (ml/week, mean) | 68.6 (142.7) | 197.8 (269.9) |
| Body mass index (kg/m2, mean) | 22.7 (2.9) | 25.4 (4.1) |
Select all of the following statements which you believe to be true.