Table 3 Utilization of emergency medical services in the two compared subgroups

ED-visited subjects

7,281

32,512

Averaged ED visits per 1,000 persons monthly (95% CI)

61.62 (59.22 , 64.01)

33.53 (32.34 , 34.71)

Mean (S.D.) of drug cost per visit ($NT)

324.6

(1334.3)

311.6

(9417.1)

0.779

Mean (S.D.) of treatment cost per visit ($NT)

3402.1

(5279.4)

2336.3

(3426.0)

<0.001

Mean (S.D.) of total medical cost per visit ($NT)

4367.2

(5804.4)

3260.6

(10138.4)

<0.001