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. 2008 Feb 14;57(5):649–654. doi: 10.1136/gut.2007.131797

Table 3. Number of subjects in the intervention group displaying serum ALT above reference levels during the study and at follow-up.

ALT reference levels Baseline (men n = 12, women n = 6) Week 1 (men n = 12, women n = 6) Week 2 (men n = 12, women n = 6) Week 3 (men n = 11, women n = 6) Week 4 (men n = 11*, women n = 6) Persistent elevation from week 1 to study end Follow-up after 6 months (n = 17**)
Men >40 U/l† 1 7 5 6 8 5 1
Men >30 U/l†† 2 9 11 10 10 8 3
Women >31 U/l† 0 2 3 3 2 1 0
Women >19 U/l†† 1 5 4 3 4 3 2

*One subject that had returned to regular eating habits during the fourth week is included.

**One subject lost to follow-up due to studies abroad.

†Upper reference limits for ALT used in NHANES III.1

††Updated upper reference limits for ALT.22