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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Stat Methods Med Res. 2018 Jul 12;28(9):2710–2723. doi: 10.1177/0962280218786302

Table 5.

Pre- to post-transfusion changes in the rSO2 temporal trajectory based on the naïve slope estimate and the proposed slope estimate.

Subjecta The naïve slope method
The proposed slope method
Pre-tran.
(SE)
Post-tran.
(SE)
Pre- to
post- change

p-Valueb
Pre-tran.
(SE)
Post-tran.
(SE)
Pre- to
post-change

p-Valuec
A1 −0.549 (0.298) 0.849 (0.035) 1.398 0.269 −0.419 (0.813) 0.857 (0.035) 1.276 <0.001
A2 0.210 (0.167) −0.073 (0.040) −0.283 0.570 0.333 (0.408) −0.068 (0.045) −0.401 <0.001
B1 0.357 (0.718) 0.061 (0.019) −0.296 0.641 0.656 (1.496) 0.082 (0.023) −0.574 0.684
B2 −0.923 (0.415) −0.026 (0.020) 0.897 0.000 −1.486 (0.640) −0.038 (0.020) 1.448 <0.001
C1 −0.190 (0.196) −0.051 (0.013) 0.139 0.466 −0.447 (0.400) −0.106 (0.019) 0.341 0.004
C2 0.377 (0.397) −0.002 (0.018) −0.379 0.038 0.349 (0.419) −0.017 (0.023) −0.366 <0.001
D −3.207 (0.278) −0.166 (0.039) 3.041 0.000 −3.129 (0.272) −0.196 (0.034) 2.933 <0.001
E −2.054 (0.853) 0.025 (0.028) 2.079 0.317 −2.930 (2.475) 0.020 (0.040) 2.951 <0.001
F1 0.731 (0.327) −0.130 (0.072) −0.861 0.012 0.823 (0.403) −0.142 (0.069) −0.965 <0.001
F2 −0.101 (0.593) 0.057 (0.022) 0.158 0.736 −0.051 (0.621) 0.055 (0.022) 0.106 0.622
G 0.656 (0.312) −0.076 (0.019) −0.732 0.000 0.882 (0.448) −0.111 (0.028) −0.992 <0.001
H −3.848 (0.567) 0.030 (0.035) 3.878 0.000 −3.717 (0.660) 0.015 (0.036) 3.732 <0.001
I 0.631 (0.238) −0.104 (0.030) −0.735 0.000 0.671 (0.262) −0.097 (0.030) −0.768 <0.001
J −0.100 (0.104) −0.136 (0.035) −0.036 0.946 −0.141 (0.272) −0.165 (0.045) −0.024 0.218
K −33.429 (4.16) 0.037 (0.032) 33.466 0.000 −33.426 (3.99) 0.029 (0.024) 33.454 <0.001
L −3.267 (0.270) 0.153 (0.019) 3.420 0.000 −3.663 (0.320) 0.146 (0.028) 3.810 <0.001
M −8.247 (4.272) 0.158 (0.022) 8.405 0.011 −7.790 (4.381) 0.240 (0.030) 8.030 <0.001
N 1.933 (0.430) −0.024 (0.024) −1.957 0.000 1.843 (0.395) −0.033 (0.025) −1.876 <0.001

Note: The scale of the slope estimate and its SE is on 10−3.

a

Different letters in the Subject list corresponding to different infants. For an infant who received multiple transfusions, a numeric value is added after a subject’s letter ID to denote different transfusions.

b

The p-value of the pre- to post-transfusion change was derived from t-test.

c

The p-value of the pre- to post-transfusion change was derived from the MI nested permutation test.