TABLE 7.

CHANGE OF SYSTOLIC AND DIASTOLIC BLOOD PRESSURE BETWEEN BASELINE AND SECOND FOLLOW-UP EXAMINATION, ACCORDING TO APNEA-HYPOPNEA INDEX AT BASELINE, AMONG 1,522 SUBJECTS WHO WERE NORMOTENSIVE AT BASELINE AND WERE NEVER TREATED WITH ANTIHYPERTENSIVE MEDICATIONS AT BASELINE OR FOLLOW-UP EXAMINATIONS^*

Baseline AHI	Model 1*	Model 2†	Model 3‡
Change in systolic BP, mm Hg
0–4.9	—	—	—
5–14.9	0.03 (0.90)	0.10 (0.94)	−0.12 (0.99)
15–29.9	0.61 (1.40)	0.84 (1.43)	0.50 (1.48)
≥30	0.93 (2.16)	1.65 (2.23)	1.39 (2.25)
Change in diastolic BP, mm Hg
0–4.9	—	—	—
5–14.9	0.26 (0.61)	0.41 (0.64)	0.48 (0.68)
15–29.9	−0.23 (0.95)	−0.02 (0.98)	−0.08 (1.01)
≥30	−0.65 (1.47)	−0.70 (1.52)	−0.67 (1.54)

Definition of abbreviations: AHI = apnea-hypopnea index; BP = blood pressure.

Values are mean (SE) change in blood pressure in mm Hg estimated by linear models, as described in text.

^*Adjusted for age, sex, race, and follow-up interval.

^†Adjusted for factors in model 1 plus BMI.

^‡Adjusted for factors in model 2 plus waist/hip ratio and neck girth.