Table 1 Study sample by ‘How many times, on average, do you miss your oral contraceptive pill each month?’

Age - Mean (SDs)

20.77 (3.37)

20.18 (3.01)

20.17 (1.10)

0.53

Single relationship status - N (%)

23 (37)

24 (48)

5 (28)

0.26

Currently sexually active - N (%)

54 (87)

37 (76)

17 (94)

0.11

Using OCP less than 1 year - N (%)

16 (26)

12 (25)

7 (39)

0.48

OCP 21 day- N (%)

50 (81)

40 (82)

13 (77)

0.90

Used emergency contraception - N (%)

31 (51)

17 (34)

11 (61)

0.08

Side effects experienced - N (%)

23 (37)

18 (37)

6 (33)

0.96

Fixed time for OCP use - N (%)

56 (90)

41 (82)

8 (44)

<0.01

Mean (SDs)

Intention

4.65 (0.51)

4.55 (0.53)

4.28 (0.43)

0.03

Perceived behavioural control

4.76 (0.40)

4.49 (0.52)

3.59 (0.84)

<0.01

Anticipated regret

2.16 (1.16)

2.47 (0.91)

2.69 (0.91)

0.10

Necessity beliefs

2.18 (0.69)

2.16 (0.70)

2.13 (0.44)

0.96

Concern beliefs

2.25 (0.68)

2.45 (0.60)

2.63 (0.55)

0.05

Action planning

3.47 (1.03)

3.11 (0.87)

2.63 (0.99)

<0.01

Coping planning

3.71 (0.92)

3.26 (0.76)

2.99 (1.01)

<0.01