In cases where there were fewer than 50 people aged ≥ 50 years in a given segment, all eligible individuals in that segment were examined and then sampling was continued in a second segment randomly selected until reaching person number 50 in the cluster.
En los casos donde hubo menos de 50 personas de ≥ 50 años en un segmento determinado, se examinaron todos los individuos de ese segmento y luego se continuó el muestreo en un segundo segmento seleccionado al azar hasta completar la persona número 50 del conglomerado.