Table 2

 Standardised hospitalisation ratios (SHRs) for selected cardiovascular diagnoses among seafarers according to whether their ships are in domestic trade or not

Diagnosis text/area of tradeObserved numberSHR95% CI
The > sign indicates that the diagnosis is a subgroup of a larger diagnostic group.
Diseases of the circulatory system (I00–I99)
    Seafarers in domestic trade113132110 to 159
    Seafarers in international trade1909784 to 112
> Ischaemic heart disease (I20–I25)
    Seafarers in domestic trade319867 to 139
    Seafarers in international trade558362 to 107
>> Acute myocardial infarction (I21)
    Seafarers in domestic trade118140 to 144
    Seafarers in international trade175934 to 94