Table 3.

Means, Pearson Correlations¹ Coefficients, and t-Tests² of Observed Abdominal Temperatures ≤ 36.4° C and the Time Matched Abdominal- Peripheral Temperature Difference

Infant	BW in Gms	Mean abdominal temperature for all observations when AbT ≤ 36.4° C (SD) [N]	Mean abdominal temperature for all observations when AbT >36.4° C (SD) [N]	Mean Δ T° C for observations when AbT 36.4° C (SD)	r	t3
A	630	35.77 (0.46) [142]	37.06 (0.37) [404]	−0.35 (0.99)	0.03	−8.80*
B	680	34.60 (1.47) [179]	36.67 (0.14) [514]	−0.29 (0.61)	0.82*	−11.12*
C	550	34.64 (2.10) [337]	37.00 (0.31) [273]	−1.00 (0.77)	−0.35*	−14.74*
D	880	35.58 (0.57) [422]	37.18 (0.38) [291]	0.50 (0.92)	0.53*	6.33*
E	720	35.06 (0.84) [565]	36.88 (0.37) [83]	−1.13 (0.69)	0.04	−19.02*
F	670	34.59 (0.99) [543]	36.93 (0.23) [180]	0.07 (0.89)	0.71*	−15.65*
G	510	35.58 (0.81) [327]	36.74 (0.43) [136]	−0.52 (1.12)	−0.10	−5.59*
H	710	34.84 (1.08) [200]	37.05 (0.28) [519]	−0.32 (0.57)	0.32*	−13.77*
I	590	34.77 (1.22) [398]	36.65 (0.11) [323]	−0.71 (0.52)	−0.23*	−16.29*
J	960	36.21 (0.31) [122]	36.71 (0.26) [528]	1.08 (0.35)	0.54*	0.10

^*p<.0001

¹Pearson Correlation: The extent to which the ΔT increased or decreased as the abdominal temperature fell below 36.4° C was significant in 7 of 10 infants.

²t-test: Mean ΔT values (abdominal–foot temperature) were significantly greater when temperature values were less than or equal to 36.4° C in 9 of 10 infants.

³df for t-test varied from 129 for subject G to 705 for subject D

BW: Birth Weight

^ΔT: Abdominal-Peripheral Temperature Difference

Gms: Grams

SD: Standard deviation

AbT: Abdominal Temperature

N: number of measurements when AbT ≤36.4° C or >36.4° C

FT: Foot temperature