Variable | Mean (SD) chest (seconds) | P value | Mean (SD) head (seconds) | P value |
---|---|---|---|---|
Phototherapy: | NS | 0.02 | ||
Non-receivers (n=384) | 1.89 (0.37) | 1.75 (0.38) | ||
Receivers (n=85) | 1.91 (0.43) | 1.65 (0.42) | ||
Nursing containers: | 0.0075 | 0.0001 | ||
Incubator (n=81) | 2.01 (0.42) | 1.62 (0.41) | ||
Radiant warmer (n=78) | 1.83 (0.45) | 1.59 (0.36) | ||
Crib (n=310) | 1.88 (0.35) | 1.79 (0.35) | ||
Observer: | 0.002 | NS | ||
KSS | 1.95 (0.42) | 1.72 (0.41) | ||
JR | 1.84 (0.31) | 1.74 (0.30) | ||
Sex: | NS | NS | ||
Boys | 1.89 (0.38) | 1.71 (0.34) | ||
Girls | 1.90 (0.38) | 1.74 (0.40) | ||
Birthweight: | NS | NS | ||
< 2500 g (n=169) | 2.00 (0.35) | 1.69 (0.34) | ||
> 2500 g (n=300) | 1.84 (0.41) | 1.76 (0.41) | ||
Gestation: | NS | NS | ||
< 37 weeks (n=203) | 1.98 (0.41) | 1.72 (0.41) | ||
> 38 weeks (n=266) | 1.82 (0.34) | 1.73 (0.34) | ||
Size for gestation age: | NS | NS | ||
AGA (n=317) | 1.90 (0.39) | 1.74 (0.37) | ||
SGA (n=95) | 1.93 (0.38) | 1.60 (0.38) | ||
LGA (n=57) | 1.84 (0.34) | 1.83 (0.31) | ||
Total (n=469) | 1.90 (0.38) | 1.73 (0.37) |