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| Study | Setting | Results | Comments |
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| Abraham et al. [48], 1970, Vellore | Rural and urban, community-based, all stroke prevalence | Prevalence: 56.9/100,000 | 25% of the stroke patients were below the age of 40 years. |
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| Bansal et al. [49], 1975, Rohtak | Urban, community-based study, all stroke prevalence | Population: 79,046Prevalence: 44/100,000 | |
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| GourieDevi et al. [50], 1987, Karnataka | Rural, community based study, all stroke prevalence | Population: 57,660Prevalence: 52/100,000 | |
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| Razdan et al. [37], 1989, Kashmir | Rural, community based study, all stroke prevalence | Population: 63,645Prevalence: 143/100,000 | 10.9% of age group 15–39 years (prevalence rate 41/100,000) |
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| Dalal et al. [51], 1989, Mumbai | Urban, hospital based study, 1963–1968 and 1978–1982 | Case fatality rate changed from 32 to 12% over this period | Studied only young stroke |
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| Nayak et al. [52], 1997, Kerela | Hospital based, retrospective, 15–45 years of age | 177 patients from 1988 to 1994. | Studied clinical features and risk factors in young |
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| Mumbai stroke registry [53] | Population based, urban, Jan to Dec 2005, all age groups | Population: 1, 86,000Crude incidence rate: 148/100, 000 | 77% ischemic, hypertension in 25.3% |
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| JIPMER stroke registry [53] | Hospital based, 2005, all age groups | 105 in six months | 36.2% patients <40 years of age |
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| Trivendrum stroke registry [53] | Population-based, urban and rural, 2005, all age groups | Population: 925,867 Crude incidence rate: 97.9/100,000 urban, 81.3/100,000 rural | Stroke in young 4.3% |
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| Das et al. [36], 2007, Kolkata | Population based, urban, 2003–2005, all age groups | Population: 52 377 Annual incidence rate (AIR)123/100,000/year | AIR in <40 years 4.22/100,000/year |
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| Lipska et al. [41], 2007, Kerala | Case control study, 15–45 years, ischemic stroke | 214 cases, 195 controls, | Metabolic syndrome and smoking-associated ischemic stroke in young |
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| Dalal et al. [54], 2008, Mumbai | Population based study, all stroke types, Jan 2005–Dec 2006 | Population: 156,861Annual incidence 145/100,000 in >25 years of age | |
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| Nagaraja et al. [55], 2009, Bangalore | Hospital based, all stroke types | 1174 patients | 18% less than 40 years of age |
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| S. Kaul et al. [56], 2009, Hyderabad | Hospital based, 2001–2005, all stroke types | Annual incidence of stroke 145/100,000 | 10–15% of stroke in young |
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