Table 2. Results.

GA	Period	Patients/ Pairs, n	BP	Mean IBP [mmHg]	Bias [mmHg]	Precision (95%CI) [mmHg]	Rm (95%CI)
23+0–27+6
	28 days	128/335	mean	34.61	-0.35	12.0 (10.6 14.1)	0.78 (0.72 0.83)
			systolic	43.51	6.21	16.9 (15.0 18.2)	0.69 (0.61 0.75)
			diastolic	27.44	-4.21	12.8 (11.2 16.2)	0.67 (0.59 0.74)
	week 1	73/120	mean	32.68	-1.36	11.4 (9.5 13.9)	0.62 (0.40 0.85)
			systolic	40.23	6.11	14.9 (12.4 18.2)	0.53 (0.29 0.71)
			diastolic	26.11	-5.14	11.7 (9.8 14.3)	0.53 (0.29 0.71)
	week 2–4	71/215	mean	36.31	0.50	11.8 (10.0 14.5)	0.80 (0.73 0.85)
			systolic	46.44	6.19	17.3 (14.8 21.3)	0.68 (0.58 0.76)
			diastolic	28.63	-3.53	13.3 (11.2 16.2)	0.69 (0.60 0.77)
23+0–25+6
	28 days	73/189	mean	33.04	0.45	11.2 (9.5 13.6)	0.84 (0.77 0.90)
			systolic	41.64	6.81	17.0 (14.4 20.8)	0.76 (0.67 0.83)
			diastolic	26.35	-3.43	10.7 (9.1 13.0)	0.75 (0.66 0.82)
	week 1	31/50	mean	28.50	-0.19	9.8 (7.4 13.3)	0.76 (0.46 0.91)
			systolic	35.36	7.31	14.9 (11.2 20.3)	0.65 (0.26 0.85)
			diastolic	22.93	-3.96	10.4 (7.7 14.1)	0.77 (0.47 0.91)
	week 2–4	50/139	mean	35.32	0.68	11.7 (9.6 14.7)	0.84 (0.77 0.90)
			systolic	44.95	6.44	17.2 (14.1 21.8)	0.75 (0.65 0.83)
			diastolic	28.00	-3.24	11.2 (9.2 14.1)	0.75 (0.64 0.83)
26+0–27+6
	28 days	55/146	mean	36.71	-1.40	12.7 (10.5 15.9)	0.70 (0.57 0.79)
			systolic	45.99	5.41	16.7 (13.9 20.9)	0.58 (0.42 0.70)
			diastolic	28.90	-5.24	14.8 (12.1 18.5)	0.59 (0.43 0.71)
	week 1	42/70	mean	35.77	-2.22	12.1 (9.6 15.7)	0.55 (0.22 0.77)
			systolic	43.83	5.23	14.8 (11.6 19.2)	0.45 (0.09 0.71)
			diastolic	28.46	-6.00	12.3 (9.8 16.0)	0.45 (0.08 0.71)
	week 2–4	21/76	mean	38.65	0.06	12.2 (9.0 17.4)	0.74 (0.58 0.84)
			systolic	50.00	5.60	17.5 (13.1 24.7)	0.58 (0.37 0.73)
			diastolic	30.13	-4.23	17.3 (12.3 25.2)	0.61 (0.41 0.75)

BP, Blood pressure; CI Confidence interval; IBP, Invasively measured blood pressure; GA, Gestational age; Rm, Repeated measures correlation coefficient.