- The frequencies of IHCAs were as follows: score of 6, 0.18 %; score of 7, 1.40 %; score of 8, 1.75 %, and a score of 9 or more, 3.57 %. The frequency of IHCAs was significantly higher among patients with scores of 7 or more than among patients with scores of 6
- * p < 0.05