Table 1 Detailed analysis of the patterns of intermittent OCS use based on the spacing of OCS bursts and mean and median number of prescriptions used among UK patients with asthma.

From: Application of an algorithm to analyze patterns of intermittent oral corticosteroid use in asthma

OCS use pattern

n (%)

Mean number of prescriptions (SD)

Median number of prescriptions (IQR)

Once-only

198,422 (41.7)

1.0 (1.0)

1.0 (1.0, 1.0)

Sporadic

65,632 (13.8)

2.4 (0.9)

2.0 (2.0, 3.0)

Any Infrequent

33,854 (7.1)

3.1 (1.4)

3.0 (2.0, 4.0)

 Infrequent only

1,445 (0.3)

2.2 (0.6)

2.0 (2.0, 2.0)

 Sporadic and infrequent

32,409 (6.8)

3.1 (1.4)

3.0 (2.0, 4.0)

Any moderately frequent

27,933 (5.9)

3.7 (2.0)

3.0 (2.0, 4.0)

 Moderately frequent only

155 (<0.1)

2.7 (0.9)

2.0 (2.0, 3.0)

 Sporadic, infrequent and moderately frequent

8,836 (1.9)

5.3 (2.2)

5.0 (4.0, 6.0)

 Sporadic and moderately frequent

17,371 (3.6)

3.0 (1.3)

3.0 (2.0, 4.0)

 Infrequent and moderately frequent

1,571 (0.3)

2.6 (1.0)

2.0 (2.0, 3.0)

Any frequent

150,326 (31.5)

8.7 (13.3)

5.0 (3.0, 9.0)

 Sporadic, infrequent, moderately frequent and frequent

39,842 (8.4)

16.2 (15.6)

12.0 (8.0, 19.0)

 Sporadic, infrequent and frequent

29,432 (6.2)

6.8 (6.3)

6.0 (4.0, 8.0)

 Sporadic, moderately frequent and frequent

17,455 (3.7)

8.4 (14.3)

6.0 (4.0, 8.0)

 Sporadic and frequent

56,661 (11.9)

3.8 (5.3)

3.0 (2.0, 4.0)

 Infrequent, moderately frequent and frequent

3,083 (0.6)

12.1 (20.0)

7.0 (4.0, 12.0)

 Infrequent and frequent

2,136 (0.4)

4.9 (10.1)

3.0 (2.0, 5.0)

 Moderately frequent and frequent

809 (0.2)

18.0 (26.6)

9.0 (6.0, 19.0)

 Frequent only

908 (0.2)

39.4 (66.1)

20.0 (4.0, 46.0)

Total

476,167 (100.0)

3.9 (8.2)

2.0 (1.0, 4.0)

  1. IQR interquartile range (25th–75th percentile), OCS oral corticosteroid, SD standard deviation.