Table 3. Multiple variable analysis of factors associated with serious abortion complications, adjusted logistic regression odds ratios^a.

	Serious complication OR (95% CI)	Serious complication, among induced abortion cases c OR (95% CI)	Sepsis OR (95% CI)
Time Period
Before implementation (2001–2003)	Reference	Reference	Reference
Early implementation (2004–2006)	1.0 (0.87, 1.16)	0.85 (0.63, 1.15)	0.60 (0.47, 0.75)***
Later implementation (2007–2010)	0.74 (0.64, 0.85)***	0.49 (0.37, 0.64)***	0.37 (0.29, 0.46)***
Patient age	1.03 (1.02, 1.04)***	1.02 (1.01, 1.04)*	1.05 (1.04, 1.07)***
Induced abortion recorded in chart	6.54 (5.74, 7.46)***	–	15.79 (13.03, 19.13)***
Stage of pregnancy:b
First trimester	Reference	Reference 1.96	Reference
Second trimester	1.78 (1.55, 2.04)***	(1.48, 2.58)***	1.89 (1.52, 2.36)***
Third trimester	1.57 (1.31, 1.88)***	1.77 (1.12, 2.77)*	1.13 (0.81, 1.61)
Model n	21,699	1,854	21,699

^*p<.05, ** p<.01, ***p<.001.

^aAll odds ratios are also adjusted for hospital and season.

^bData on the stage of pregnancy was missing in 7.6% of the medical charts. Significance and direction of results were unchanged when the stage of pregnancy variable was excluded from the models.

^cClinical evidence such as foreign body or injury from instrumentation (e.g., uterine perforation) or free-text chart documentation of induced abortion based upon patient disclosure or provider observation.