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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: BJOG. 2016 Oct 21;124(2):322–330. doi: 10.1111/1471-0528.14383

Table 4.

Multinomial logistic regression—patient characteristics associated with whether the 41 561 women switched from or discontinued their index medication therapy

Predictor Discontinued medication
RRR (95% CI)
Switched to other therapies
RRR (95% CI)
Index medication
 LARC 0.14a (0.13–0.15) 0.36a (0.33–0.39)
 LA 19.23a (11.32–32.64) 48.64a (28.69–82.46)
 SARC Ref Ref
 TA 4.64a (3.39–6.34) 4.29a (3.12–5.89)
Age, years
 18–40 Ref Ref
 41–46 1.11b (1.03–1.20) 1.30a (1.21–1.41)
 >46 1.76a (1.62–1.91) 1.46a (1.34–1.58)
Comorbidity
 Anaemia 1.24a (1.15–1.34) 1.79a (1.65–1.93)
 Inflammatory disease 1.43a (1.17–1.74) 1.29c (1.05–1.58)
 Noninflammatory disease 1.09c (1.02–1.17) 0.86a (0.80–0.92)
 Endometriosis 1.01 (0.87–1.18) 0.89 (0.76–1.04)
 Benign neoplasm of uterus/ovary 1.00 (0.90–1.11) 0.67a (0.60–0.75)
 Pregnancy/delivery 1.17 (0.94–1.44) 0.52a (0.41–0.66)
Enrollment time, years 1.37a (1.35–1.40) 1.39a (1.37–1.42)

ED, emergency department; LA, leuprolide acetate; LARC, long-acting reversible contraceptive steroid; Ref, reference; RRR, relative risk ratio; SARC, short-acting reversible contraceptive steroid; TA, tranexamic acid; UF, uterine fibroid.

a

P < 0.001;

b

P < 0.01;

c

P < 0.05.