Table 2 Pain outcomes (averages and proportions) at different moments and compared between first-time and returning participants and between five breast volume stratifications

Average pain scores

n = 43

n = 281

n = 324

n = 65

n = 65

n = 65

n = 64

n = 65

 Recollected from previous mammogram

-

6.19

6.19

7.04

6.72

5.51

5.07

6.28

 At end of deformation phase

4.40

4.80

4.75

5.45

5.03

4.19

4.39

4.65

 At end of clamping phase

5.70

5.90

5.88

6.70

6.15

5.03

5.75

5.75

Proportions severe pain (NRS ≥ 7 )

 At end of deformation phase

.16

.24

.23

.32

.28

.15

.19

.22

 At end of clamping phase

.51

.49

.50

.58

.55

.34

.52

.49

Proportions moderate pain (4 ≤ NRS < 7 )

 1 day after mammogram

.05

.15

.11

.13

.13

.06

.17

.18

 2 days after mammogram

.05

.05

.04

.03

.08

.02

.03

.10

 3 days after mammogram

0

.04

.03

.03

.03

0

0

.10

 4 days after mammogram

0

.01

.01

.03

0

0

0

0

 5 days after mammogram

0

0

0

0

0

0

0

0