However , the lymphocyte counts of sporadic cases were significantly lower than those of family cluster cases ( ( 1 . 32 ± 0 . 55 ) × 10 9 / l vs . ( 1 . 63 ± 0 . 70 ) × 10 9 / l , P = 0 . 037 ) , and the proportion of hypoalbuminaemia was higher in sporadic cases ( 18 / 43 , 41 . 86 %