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Table 2 Semiquantitative gas score by McNair et al. [21] and its frequency distribution

From: Impact of a low FODMAP diet on the amount of rectal gas and rectal volume during radiotherapy in patients with prostate cancer – a prospective pilot study

Score

Gas‘proportion of rectal volume

CG (n = 266)

IG (n = 280)

1

0 – 5%

16 (6.0%)

24 (8.6%)

2

5 – 25%

94 (35.3%)

131 (46.8%)

3

25 – 50%

73 (27.4%)

82 (29.3%)

4

50 – 75%

67 (25.2%)

35 (12.5%)

5

75 – 100%

16 (6.0%)

8 (2.9%)