Asthma in pregnancy

Table 1 Pregnancy associated asthma morbidity by severity classification

	Mild asthma n (%)		Moderate asthma n (%)		Severe asthma n (%)
	Schatz et al[51]	Murphy et al[55]	Schatz et al[51]	Murphy et al[55]	Schatz et al[51]	Murphy et al[55]
	(n = 873)	(n = 63)	(n = 814)	(n = 34)	(n = 52)	(n = 49)
Asthma Exacerbation	110 (12.6)	5 (8)	209 (25.7)b	16 (47)	27 (51.9)d	32 (65)
Unscheduled physician or ED presentation	99 (11.3)	4 (6.3)	157 (19.3)b	14 (41)	19 (36.5)b	20 (41)
Oral corticosteroid use	19 (2.2)	0 (0)	71 (8.7)b	4 (11.8)	20 (38.5)b	19 (38.8)
Hospitalization	20 (2.3)	2 (3.2)	55 (6.8)b	1 (2.9)	14 (26.9)b	9 (18.4)

^bP < 0.0001,

^dP < 0.001 vs preceding severity group (moderate to mild; severe to moderate). ED: Emergency Department.