Table 2 Comparison of baseline characteristics between OSA patients with and without RH in the training set.

From: A risk prediction nomogram for resistant hypertension in patients with obstructive sleep apnea

Characteristic

OSA patients

P

Without RH (n = 423)

With RH (n = 116)

Sex

 Male

331 (78.3%)

106 (91.4%)

0.001

Age (year)

52.15 (13.71)

52.66 (13.17)

0.719

BMI (kg/m2)

26.83 (3.81)

28.99 (4.26)

 < 0.001

Smoke

135 (31.9%)

63 (54.3%)

 < 0.001

Alcohol

52 (12.3%)

13 (11.2%)

0.75

Family history of hypertension

113 (26.7%)

56 (48.3%)

 < 0.001

Heart disease

44 (10.4%)

27 (23.3%)

 < 0.001

Diabetes

68 (16.1%)

33 (28.4%)

0.002

Neck circumference (cm)

35.81 (1.90)

37.32 (2.12)

 < 0.001

Waist circumference (cm)

94.46 (4.98)

97.47 (4.85)

 < 0.001

ESS

10.21 (2.99)

12.61 (3.1)

 < 0.001

Total sleep time (h)

7.47 (1.86)

7.18 (1.96)

0.148

AHI

26.26 (15.78)

41.61 (19.84)

 < 0.001

T90 (%)

1.16 (4.59)

9.35 (22.19)

 < 0.001

ODI

11.73 (20.18)

28.67 (34.07)

 < 0.001

LSaO2 (%)

76.79 (11.16)

74.79 (8.53)

0.075

MSaO2 (%)

95.41 (2.12)

92.88 (8.62)

 < 0.001

TC (mmol/L)

4.29 (0.98)

4.41 (1.01)

0.253

Triglyceride (mmol/L)

1.98 (1.69)

2.08 (1.81)

0.572

HDL (mmol/L)

1.12 (0.25)

1.08 (0.21)

0.077

LDL (mmol/L)

2.55 (0.77)

2.64 (0.72)

0.241

FBG (mmol/L)

5.68 (1.42)

6.11 (1.94)

0.009

  1. RH, resistant hypertension; BMI, body mass index; ESS, Epworth sleepiness scale; AHI, apnea–hypopnea index; T90, percentage of total time with oxygen saturation level < 90%; ODI, oxygen desaturation index; LSaO2, lowest arterial oxygen saturation; MSaO2, mean arterial oxygen saturation; TC, total cholesterol; HDL, high density lipoprotein; LDL, low density lipoprotein; FBG, fasting blood glucose.