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. Author manuscript; available in PMC: 2019 Apr 16.
Published in final edited form as: Contraception. 2017 Oct 31;97(3):264–269. doi: 10.1016/j.contraception.2017.10.009

Table 4.

Pharmacy staff responses to differences between UPA and LNG ECPs1.

Response category2 Response subgroup & example Number
responses
(% total)
Correct Incorrect Unclear3
Effectiveness
PlanB® is more effective “PlanB® is probably more effective.” 1 (0.7%) 0 1 0
ella® is more effective “ella® is more effective and stronger than PlanB®.” 3 (2.1%) 3 0 0
Indication
Emergency versus routine contraception “PlanB® is emergency, while ella® is not.” 4 (2.8%) 0 3 1
Mechanism
Effect on implantation “PlanB®
prevents eggs from sticking to uterine lining versus ella® postpones ovulation.”
3 (2.1%) 0 3 0
Effect on progestin receptors “PlanB®
is a protestin-type hormone, while ella® is a progestin receptor modulator…”
1 (0.7%) 1 0 0
Effect on ovulation “ella® delays ovulation…while PlanB® blocks ovulation.” 2 (1.4%) 1 1 0
Effect post-fertilization “PlanB®…is progestin-based, so only effective if you haven’t ovulated and sperm didn’t contact with egg.
Ella® is a bit more controversial because it works…even after fertilization.”
1 (0.7%) 0 1 0
Prescription
Over-the-counter versus prescription status
“PlanB® is over-the-counter; ella® is prescription.”
29 (20.6%) 26 0 3
Timing
Window following unprotected sex “PlanB® you can take within 72 h, ella® up to 5 days.” 89 (63.1%) 70 5 14
Urgency of administration “PlanB® can be taken within 72 h, the sooner the better.” 2 (1.4%) 0 1 1
Weight
Effectiveness by patient weight “ella®…will work better for those overweight.” 3 (2.1%) 2 1 0
Indication by patient weight “ella® is for patients above a certain weight limit.” 3 (2.1%) 2 0 1
1

Responses included from the 211 pharmacies that discussed a difference between the medications.

2

Categories of differences are not mutually exclusive. Additional response categories included: administration (n=2), bleeding (n=1), brand (n=6), composition (n=75), dose (n=1), generic (n=2), insurance (n=1), manufacturer (n=1), price (n=5), and potency (n=13).

3

Responses were classified as ‘Unclear’ if unable to be considered definitively correct or incorrect. Examples of such responses include, “works differently, but accomplishes the same thing,” and “strength of medication is different.”