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Figure 2 | BMC Health Services Research

Figure 2

From: Does a pre-hospital emergency pathway improve early diagnosis and referral in suspected stroke patients? – Study protocol of a cluster randomised trial [ISRCTN41456865]

Figure 2

Flow chart of randomization procedure. Overall we had 20 units of randomization (cluster) of which 10 are couples composed of one ES+1ER on the basis of closeness (usually the ES is situated in the same place of the ER, or systematically refers patients in the same closest ER); 6 are ES and 4 are ER which could not be matched.

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