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Babies respond* to probiotics
| Day of study | L reuteri n=25 (%) | Placebo n=21 (%) | P value |
| 7 | 20 (80) | 8 (36) | .006 |
| 14 | 24 (96) | 13 (62) | .007 |
| 21 | 24 (96) | 15 (71) | .036 |
*An infant with a decrease in daily average crying time of 50% from baseline was defined as a responder.
