Table 1

Mean (SD) characteristics of study patients

Men (n=401)Women (n=148)Difference (95% CI)p value*
BMI = body mass index; AHI = apnoea/hypopnoea index; ESS = Epworth sleepiness scale score; Time <90% = percentage of time below an Sao2 of 90%. *Unpaired t test.
Age (years)47.2 (11.3)50.2 (11.4)–3.1 (–5.2 to –0.9)0.0051
BMI (kg/m2)35.5 (7.5)39.6 (10.0)−4.1 (−5.6 to −2.5)<0.0001
AHI (events/h)47.2 (32.0)32.6 (30.0)14.5 (8.6 to 20.5)<0.0001
Time<90%19.2 (21.6)16.0 (24.8)3.1 (−1.1 to 7.4)0.1731
ESS13.0 (5.7)12.5 (5.9)0.6 (−0.5 to 1.7)0.2899