Time of day; unedited data
| Variable | Afternoon 1300-1900 h | Evening 1900-0100 h | Night 0100-0700 h | Morning 0700-1300 h | Analysis of covariance | Significance LSD (p<0.05) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SEM | Mean | SEM | Mean | SEM | Mean | SEM | ||||||||||
| Mean time | 245.5 | 8.4 | 284.9 | 8.1 | 318.1 | 5.0 | 261.3 | 6.0 | — | — | |||||||
| Reflux index (%) | 10.2 | 1.0 | 12.2 | 1.8 | 7.4 | 1.1 | 10.9 | 2.0 | F=3.83 df=3,134 p=0.011 | 3.0 Night <other times | |||||||
| No of episodes/mean time | 12.0 | 1.2 | 7.5 | 1.0 | 4.2 | 0.5 | 9.8 | 0.9 | F=20.91 df=3,134 p=0.001 | 2.1 Night <other times | |||||||
| No of episodes >5 min/mean time | 1.6 | 0.2 | 1.6 | 0.2 | 1.1 | 0.2 | 1.4 | 0.2 | NS F=1.94 df=3,134 p=0.13 | — | |||||||
| Longest episode (min) | 14.6 | 2.5 | 23.4 | 3.9 | 15.8 | 2.8 | 18.3 | 3.7 | F=2.79 df=3,134 p=0.042 | 6.8 Evening >other times | |||||||
Values other than analysis of variance have been rounded to a single decimal place.
Because of the varied starting times for each segment, each segment was grouped for analysis. At least 3¼ hours had to fall into the time periods of afternoon (1300-1900 hours), evening (1900-0100 hours), night (0100-0700 hours), or morning (0700-1300 hours), for each period to be analysed for the time of day factor.