Long-Term Persistency of Abnormal Heart Rate Variability following Long NICU Stay and Surgery at Birth

Table 4

ANCOVA results.

	HR (bpm)			LF (nu)			HF (nu)			ln (LF/HF ratio)			% change in HR
	df	F	P	df	F	P	df	F	P	df	F	P	df	F	P
Type of birth	1	0.135	0.715	1	<0.001	0.985	1	0.223	0.638	1	0.131	0.718	1	0.039	0.844
Pain at birth	1	4.275	0.041	1	6.414	0.013	1	9.466	0.003	1	8.448	0.004	1	7.856	0.006
Type of birth × pain	1	0.059	0.808	1	0.492	0.485	1	0.672	0.414	1	0.756	0.387	1	0.041	0.841
Age	1	19.971	<0.001	1	16.675	<0.001	1	4.492	0.036	1	9.711	0.002	1	5.033	0.027