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Table 1 Description of study patients by genotype, mean age, follow up time and percentage uptake of targeted interventions by early or late presentation to the Sickle Cell Unit in Jamaica (N = 290)

From: The risk of acute events among patients with sickle cell disease in relation to early or late initiation of care at a specialist center: evidence from a retrospective cohort study

  Early Intervention
(N = 113)
Late Intervention (N = 177)  
SS 110 (97%) 168(95%)  
0 3 (3%) 7 (4%)  
S0A 0 2 (1%)  
Mean Age at first visit, years(months) 0.2 (2.9) 2.3 (27.6) t = 17.0; p < 0.010
Follow up time (years) 5.2 3.2 t= -17.0; p < 0.010
Proportion of patients diagnosed by newborn screening 103 (92%) 114 (64%) χ2 = 90.6; p < 0.010
Proportion receiving Penicillin Prophylaxis 111 (98%) 134 (76%) χ2 = 28.4; p < 0.010
Proportion receiving polyvalent pneumococcal vaccine 106 (93%) 156 (88%) χ2 = 2.5; p = 0.111
Proportion with at least 2 doses PCV 35 (31%) 50 (28%) χ2 = 0.2 ; p = 0.619