Table 4.
Multiple Linear Regression Analysis Testing the Association Between Haemoglobin Level and var2csa Copy Number, Gravidity, Weeks of Pregnancy, Maternal Age, and Parasitemia
| Tested parameters | Coeff. | [95% CI] | P value |
| Ngali II (N = 131) | |||
| Var2csa copy number | 0.22 | .053 to .38 | .009 |
| Primi-multigravidae | −.12 | −1.08 to .83 | .799 |
| Weeks of pregnancy | 0.016 | −.016 to .047 | .326 |
| Maternal age | 0.069 | −.0076 to .15 | .077 |
| Parasitemia | −.071 | −.17 to .028 | .161 |
| Cons-* | 8.73 | 6.92 to 10.55 | .000 |
| Yaoundé (n=110) | |||
| Var2csa copy number | 0.016 | −.12 to .15 | .811 |
| Primi-multigravidae | 0.014 | −.72 to .74 | .970 |
| Weeks of pregnancy | 0.033 | .0034 to .062 | .029 |
| Maternal age | 0.040 | −.036 to .12 | .301 |
| Parasitemia | 0.043 | −.050 to .14 | .363 |
| Cons- | 8.84 | 6.89 to 10.80 | .000 |
NOTE. CI, confidence interval.
*Cons- (constant alpha) is the value that the dependent variable is predicted to have when all the independent variables are equal to zero.