Table 1.

Baseline characteristics of population included in INDANA database

			Number of patients
Study	Follow-up (years)	Treatment allocated	Treated	Control	Male (%)	Age (mean)
MRC1	4.9	Placebo	8700	8654	52	52
EWPHE	4.7	Untreated	416	424	30	72
COOPE	4.4	Untreated	419	465	31	69
SHEP	4.5	Untreated	2365	2371	43	72
STOP	2.1	Untreated	812	815	37	76
MRC2	5.8	Placebo	2183	2213	42	70

Abbreviations: INDANA, Individual Data ANalysis of Antihypertensive drug intervention trials.