Mean flare values in photons/ms according to age in patients and controls.
| Crohn's disease | Ulcerative colitis | Indeterminate IBD | Controls | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age | No | Mean | SD | Min | Max | No | Mean | SD | Min | Max | No | Mean | SD | Min | Max | No | Mean | SD | Min | Max | |||
| <20 | 4 | 4.0 | 1.1 | 2.9 | 5.5 | 1 | 3.6 | – | – | – | 0 | – | – | – | – | 0 | – | – | – | – | |||
| 20–29 | 31 | 3.8 | 0.8 | 2.2 | 5.3 | 13 | 4.1 | 1.2 | 3.1 | 7.1 | 6 | 4.1 | 1.2 | 2.0 | 6.4 | 13 | 4.2 | 1.1 | 1.7 | 6.4 | |||
| 30–39 | 25 | 4.2 | 1.0 | 2.7 | 7.4 | 14 | 4.2 | 1.1 | 3.1 | 6.9 | 9 | 4.3 | 1.4 | 3.1 | 6.5 | 10 | 4.5 | 1.2 | 2.8 | 6.0 | |||
| 40–49 | 21 | 4.9 | 1.0 | 3.7 | 7.6 | 13 | 5.3 | 1.7 | 3.1 | 8.5 | 5 | 4.7 | 1.2 | 3.4 | 5.7 | 11 | 5.0 | 1.1 | 3.3 | 6.9 | |||
| 50–59 | 9 | 4.3 | 1.3 | 2.5 | 6.1 | 8 | 4.7 | 1.7 | 2.2 | 8.3 | 4 | 5.1 | 1.0 | 2.3 | 7.2 | 10 | 5.1 | 1.3 | 3.7 | 7.4 | |||
| 60–69 | 4 | 5.1 | 1.2 | 3.4 | 6.2 | 5 | 5.8 | 2.0 | 4.6 | 6.6 | 4 | 4.6 | 1.4 | 3.8 | 6.3 | 6 | 6.8 | 2.1 | 5.2 | 9.8 | |||
| 70+ | 2 | 6.3 | 3.9 | 3.6 | 9.0 | 1 | 5.7 | 0.9 | – | – | 0 | – | – | – | – | 4 | 6.8 | 3.4 | 4.5 | 10.7 | |||
| Total | 96 | 55 | 28 | 54 | |||||||||||||||||||
The mean for each different age group is the mean of the averaged flare value measured in the left and right eye of each patient.
↵Patients in the youngest age category were all between 18 and 20 years of age.
SD = standard deviation of the mean flare value within each age group; min = minimum flare value measured in one of the eyes measured in a patient belonging to that particular age group; max = maximum flare value measured in one of the eyes measured in a patient belonging to that particular age group; indeterminate IBD = patients with a diagnosis of inflammatory bowel disease without a specific diagnosis at the time of measurement.
Controls were accompanying persons of patients seen in the ophthalmic outpatient clinic without a history of eye or intestinal problems.