Table 2.

Univariate binary logistic regression.

Parameter	χ 2	P value	Odds ratio	95% confidence interval
Age	0.3489	0.555	0.9872	0.9457 - 1.0305
Gravidity	0.0425	0.8367	0.9185	0.4092 - 2.0617
Gestational age	0.9181	0.3384	1.1303	0.8796 - 1.4525
Systemic condition	3.7765	0.0472	1.2009	0.9871 - 1.4611
Occupation	6.6444	0.0103	1.6698	1.1287 - 2.4704