Deviation from MAR3
| Strong | Strong | Moderate | Weak |
---|
r
|
0.1
|
0.2
|
0.5
|
0.7
|
Odds ratio estimate
| 1.28 | 1.28 | 1.24 | 1.20 |
95% confidence interval
| 1.03, 1.60 | 1.03, 1.58 | 1.01, 1.52 | 0.99, 1.46 |
P-value
| 0.03 | 0.03 | 0.04 | 0.06 |
- 1: at least one of the three tests for fetal hypoxia is positive, i.e. fetal scalp pH < 7.25, or umbilical artery pH < 7.20, or venous pH < 7.28
- 2: singletons born in Alberta 1998-2004 and followed up till March 31, 2008, effects adjusted for birth year and socio-economic status
- 3: contribution of clinical judgment to prescribing the test beyond Z; MAR = missing at random, r = 1, see Table 3