Table 3.
Space-time cubes and emerging hot spot analyses exhibiting increasing trends across Alberta Perinatal Health Program (APHP) all births, small for gestational age (SGA), low birth weight at term (LBWT) and Canadian Neonatal Network (CNN) critically ill (ci) SGA and LBWT.
Calgary |
Edmonton |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
APHP = 865 locations |
CNN = 568 locations |
APHP = 1032 locations |
CNN = 442 locations |
|||||||
Births | SGA | LBWT | ciSGA | ciLBWT | Births | SGA | LBWT | ciSGA | ciLBWT | |
Trend | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ | ↑ |
Mann-Kendall statistic | 4.89 | 3.07 | 1.86 | 3.65 | 2.22 | 6.72 | 6.66 | 5.72 | 3.71 | 2.56 |
P value | <.01 | <.01 | .06 | <.01 | .03 | <.01 | <.01 | <.01 | <.01 | .01 |
Sparseness (% non-zero) | 52.75 | 12.8 | 2.70 | 1.46 | 0.36 | 27.57 | 5.38 | 1.07 | 0.56 | 0.14 |
No pattern | 0.508 | 0.874 | 0.939 | 0.979 | 0.944 | 0.421 | 0.684 | 0.898 | 0.937 | 0.939 |
Hot spots | ||||||||||
New | − | 0.001 | 0.010 | 0.002 | 0.018 | − | 0.008 | 0.004 | 0.014 | − |
Consecutive | 0.003 | − | − | 0.004 | 0.018 | 0.002 | 0.045 | 0.002 | 0.011 | 0.009 |
Intensifying | 0.112 | 0.015 | − | − | − | − | − | − | − | − |
Persistent | 0.045 | 0.020 | − | − | − | − | − | − | − | − |
Diminishing | 0.013 | 0.003 | − | − | − | − | − | − | − | − |
Sporadic | 0.082 | 0.084 | 0.051 | 0.016 | 0.021 | 0.009 | 0.264 | 0.096 | 0.038 | 0.052 |
Oscillating | 0.006 | − | − | − | − | 0.513 | − | − | − | − |
Historical | 0.001 | 0.001 | − | − | − | − | − | − | − | − |
Cold spots | ||||||||||
New | 0.001 | − | − | − | − | − | − | − | − | − |
Consecutive | − | − | − | − | − | − | − | − | − | − |
Intensifying | 0.043 | − | − | − | − | − | − | − | − | − |
Persistent | 0.090 | − | − | − | − | − | − | − | − | − |
Diminishing | 0.014 | − | − | − | − | 0.016 | − | − | − | − |
Sporadic | 0.082 | − | − | − | − | 0.040 | − | − | − | − |
Oscillating | − | − | − | − | − | − | − | − | − | − |
Historical | − | − | − | − | − | − | − | − | − | − |
Hot/cold trends | 0.492 | 0.126 | 0.061 | 0.021 | 0.056 | 0.579 | 0.316 | 0.102 | 0.063 | 0.061 |
Category count | 12 | 6 | 2 | 3 | 3 | 5 | 3 | 3 | 3 | 2 |
Proportion of each hot/cold spot category is shown; pattern categories are defined in Supplemental Table S1.