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Table 1 Descriptive statistics for TPB & self-identity constructsa

From: Using the theory of planned behavior and self-identity to explore women’s decision-making and intention to switch from combined oral contraceptive pill (COC) to long-acting reversible contraceptive (LARC)

Questionnaire Items Mean SD
Attitude
 1. To me, obtaining an IUD or Implant seems   
  Extremely Difficult/Extremely Easy 4.41 1.75
  Extremely Frightening/Extremely Comforting 3.55 1.73
  Extremely Painful/Extremely Painless 3.18 1.54
 2. Choosing an IUD/Implant as my primary birth control method would be   
  Extremely Harmful/Extremely Beneficial 5.06 1.62
  Extremely Inconvenient/Extremely Convenient 5.24 1.68
  Extremely Irresponsible/Extremely Responsible 5.48 1.67
  Extremely Unhealthy/Extremely Healthy 4.83 1.71
 3. Using an IUD or Implant would be more convenient for my lifestyle than other contraceptive methods, such as the pill. 4.91 1.94
 4. IUDs and Implants are more effective at preventing pregnancy than other contraceptive methods, such as the pill. 5.15 1.69
 5. An IUD or Implant would be able to control my acne as well as other contraceptive methods, such as the pill. 3.98 1.44
 6. An IUD or Implant would be as effective at reducing menstrual cramps as other contraceptive methods, such as the pill. 4.13 1.60
 7. An IUD or Implant would be as effective at regulating my menstrual cycle as other contraceptive methods, such as the pill. 4.67 1.63
Subjective Norm
 8. The IUD and Implant are good contraceptive options for women in my peer group. 5.80 1.52
 9. My friends would support my decision to use an IUD or Implant as my primary contraceptive method. 6.13 1.40
 10. My mother or female mentor would support my decision to use an IUD or Implant as my primary contraceptive method. 5.26 1.92
 11. My sexual partner would support my decision to use an IUD or Implant as my primary contraceptive method. 6.79 1.77
 12. If I used an IUD or Implant as my primary contraceptive method, I would be able to relate to my peers. 4.51 1.74
Perceived Behavioral Control
 13. I am confident in my ability to obtain an IUD or Implant if I desired to use it as my primary contraceptive method. 5.66 1.68
 14. Obtaining an IUD/Implant as my primary contraceptive method would be   
  Not at all up to me/Completely up to me 6.30 1.30
  Not at all under my control/Completely under my control 6.11 1.43
 15. My health care provider would support my decision to obtain an IUD or Implant. 5.82 1.38
 16. My health insurance would pay for an IUD or Implant. 4.69 1.68
 17. I know where to go if I wished to obtain an IUD or Implant as my primary contraceptive method. 5.81 1.69
Intention
 18. I intend to research more about the IUD or Implant in the future. 4.63 1.89
 19. I intend to research if my insurance plan covers the IUD or Implant. 4.49 1.96
 20. I intend to research facilities in my area that offer IUD or Implant insertions. 4.02 1.96
 21. I intend to discuss the IUD or Implant as an option for my primary form of contraception with my health care provider at my next appointment. 3.77 2.04
 22. I intend to discuss the IUD or Implant as an option for my primary form of contraception with my health care provider in the future. 4.24 2.04
 23. I intend to learn more about the process of getting an IUD or Implant and how I may go about obtaining one in the future. 4.41 2.01
 24. I intend to talk to my friends about the IUD or Implant in the future. 4.25 1.95
 25. I intend to talk to my mom or female mentor about the IUD or Implant in the future. 4.01 2.01
 26. I intend to talk to my partner about the IUD or Implant in the future. 3.99 2.06
 27. I intend to ask IUD and Implant users about their experiences with the methods to determine if an IUD or Implant might be right for me. 4.77 1.92
 28. I can see myself using an IUD or Implant as my primary contraceptive method in the next 12 months. 3.20 2.05
 29. I can see myself using an IUD or Implant as my primary contraceptive method in the future. 4.37 2.13
 30. I intend to take the steps to obtain an IUD or Implant as my primary contraceptive method in the future. 3.81 2.05
 31. I intend to change my contraceptive method from the pill to the IUD or Implant. 3.38 2.07
Self-Identity
 32. Taking the pill every day is an important part of who I am. 4.44 1.96
 33. I am the type of woman who would use an IUD or Implant as my primary birth control method. 4.45 1.91
 34. I see myself as responsible enough to take the pill every day; the IUD and Implant are not for women like me. (reverse coded) 4.13 1.90
 35. Having a monthly period is an important part of my identity as a woman. 3.09 2.15
 36. Taking the pill every day protects my future fertility better than other contraceptive methods, like the IUD or Implant. 3.39 1.68
  1. aEach item ranged between 1 = strongly disagree/extremely harmful/etc. to 7 = strongly agree/extremely beneficial/etc