Finland | Kuopio | J T Salonen | General population | Age stratified random sample of men, aged 42, 48, 54 and 60 years | 2682 | National mortality registry |
| Stroke registry |
| Helsinki | J Tuomilehto | General population | Random sample | around 15000 | National mortality registry |
| | | | | | Stroke registry |
Greece | Athens | A Trichopoulou | General population | Men and women volunteers, 30–75 years | 28577 | National mortality registry |
| | | | | | Active follow up |
Italy | Firenze | D Inzitari | General population | Age stratified random sample men and women, aged 65–84 years | 4373 | Hospital-based stroke registry |
| | | | | | Follow up by questionnaire, telephone and re-examination |
Netherlands | Rotterdam | D E Grobbee | General population | Random sample of men and women, aged 55 years or over | 7983 | National mortality registry |
| | P J Koudstaal | | | | General Practitioner Stroke Registry |
Portugal | Coimbra | A Freire Concalves | General population | Random sample of men and women, aged 55 years or over | 3020 | General Practitioner based stroke registry |
Russia | Novosibirsk | Y Nikitin | General population | Random sample of men and women, aged 25 to 64 years | 9006 | Stroke Registry (MONICA procedures) |
United Kingdom | Cardiff | P C Elwood | General population | Random sample of men, aged 45–59 years | 2512 | National mortality registry |
| | | | | | Hospital records |
| | | | | | Follow up by questionnaire |