Determinants of CPAP Adherence in Hispanics with Obstructive Sleep Apnea

Table 1

Baseline characteristics*.

Variable	Total group	Hispanic	African American	Caucasian	𝑃 value
Patients, 𝑛	79	25	39	15
Age, yrs	53±11	54±12	54±13	56±12	𝑃=0.8
Male, 𝑛 (%)	26 (33)	8 (32)	7 (18)	3 (20)	𝑃=0.4
BMI, kg/m^2	45±9	44±7	40±9	46±13	𝑃=0.7
Baseline AHI, events/hr	33±30	32±24	34±31	32±38	𝑃=0.3
Lowest SpO2, %	82±9	85±5	81±10	81±7	𝑃=0.3
% TST SpO2 < 90%	8±13	11±16	8±12	5±7	𝑃=0.7
TST, min	308±77	330±70	324±76	279±79	𝑃=0.2
Sleep efficiency, %	78±17	82±15	80±15	74±19	𝑃=0.4
Arousal index, events/hr	18±14	17±10	17±15	24±16	𝑃=0.2
Sleep architecture, %TST
N1, %	16±14	16±14	15±12	17±18	𝑃=0.9
N2, %	53±16	51±19	53±13	56±13	𝑃=0.7
N3, %	13±11	12±10	14±11	13±10	𝑃=0.8
REM, %	16±13	16±15	17±9	14±12	𝑃=0.7
CPAP, cm H2O	12±4	12±3	13±4	12±4	𝑃=0.7

∗Data are presented as mean ± SD or the number of patients. BMI: body mass index; AHI: apnea-hypopnea index; TST: total sleep time; REM: rapid eye movement; CPAP: continuous positive airway pressure.