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Table 2 Mean (O-E)/N for hospital surfactant use and death

From: Assessment of surfactant use in preterm infants as a marker of neonatal intensive care unit quality

Hospital Surfactant use
Mean (95% CI)
p-value
Death
Mean (95% CI)
p-value
A 0.102 (0.082,0.122)
<0.001*
-0.130 (-0.166,-0.092)
<0.001*
B 0.196 (0.079,0.308)
0.010
0.011 (-0.004, 0.026)
0.219
C 0.131 (0.088,0.173)
<0.001*
0.003 (-0.006,0.012)
0.573
D 0.118 (0.065,0.172)
<0.001*
-0.004 (-0.014,0.006)
0.496
E 0.030 (-0.020,0.082)
0.312
0.00 (-0.012,0.011)
0.999
F 0.048 (0.026,0.071)
<0.001*
-0.017 (-0.021,-0.013)
<0.001*
G 0.043 (-0.031,0.114)
0.319
0.004 (-0.009,0.017)
0.534
H 0.027 (-0.086,0.137)
0.700
-0.005 (-0.024,0.015)
0.712
I 0.013 (-0.038,0.064)
0.659
-0.009 (-0.018,0.001)
0.129
J -0.035 (-0.087,0.016)
0.265
0.013 (0.004,0.022)
0.001*
K -0.065 (-0.113,-0.018)
0.020
-0.001 (-0.010,0.008)
0.845
L -0.117 (-0.177,-0.057)
0.001*
0.002 (-0.008,0.011)
0.771
M -0.164 (-0.240,-0.087)
<0.001*
0.006 (-0.010,0.022)
0.536
N -0.192 (-0.269,-0.111)
<0.001*
0.008 (-0.006,0.023)
0.472
O -0.298 (-0.337,-0.258)
<0.001*
0.033 (0.023,0.044)
<0.001*
P -0.350 (-0.436,-0.260)
<0.001*
0.027 (0.004,0.051)
0.041
  1. *significant with p ≤ 0.05 after Bonferoni correction (p ≤ 0.05/16 = 0.003)