Table 2—

Comparison of patient characteristics

GroupOverallp-value
GPGP+SPESPE
Age mean±sd35.3±9.536.9±10.034.7±10.036.1±9.90.003
Sex female243 (52.9)369 (56.7)69 (48.3)681 (54.3)0.140
BMI0.599
 <20%66 (15.4)92 (15.5)25 (19.4)183 (15.9)
 20–25%228 (53.3)293 (49.5)69 (53.5)590 (51.3)
 25–30%79 (18.5)120 (20.3)22 (17.1)221 (19.2)
 >30%55 (12.9)87 (14.7)13 (10.1)155 (13.5)
Smoking0.000
 Nonsmokers267 (58.6)472 (73.0)120 (85.1)859 (69.1)
 1–9 cigarettes·day−179 (17.3)84 (13.0)11 (7.8)174 (14.0)
 ≥10 cigarettes·day−1110 (24.1)91 (14.1)10 (7.1)211 (17.0)
Peak-flow meter % of theoretical value0.003
 >80%252 (58.6)349 (57.8)98 (75.4)699 (60.1)
 61–80%103 (24.0)152 (25.2)23 (17.7)278 (23.9)
 31–60%75 (17.4)103 (17.1)9 (6.9)187 (16.1)
Frequency of diurnal asthma0.028
 Once a week or less299 (76.3)396 (72.4)104 (86.0)799 (75.4)
 >once a week52 (13.3)92 (16.8)9 (7.4)153 (14.4)
 ≥once daily41 (10.5)59 (10.8)8 (6.6)108 (10.2)
Frequency of nocturnal asthma attacks0.000
 Never231 (56.1)282 (50.4)98 (78.4)611 (55.7)
 >2 monthly120 (29.1)177 (31.7)20 (16.0)317 (28.9)
 >once a week38 (9.2)67 (12.0)3 (2.4)108 (9.9)
 Almost each night23 (5.6)33 (5.9)4 (3.2)60 (5.5)
  • All data are presented as n (%) unless otherwise stated. GP: general practitioner; SPE: specialists; BMI: body mass index.