Relationship between number of problems and mean (SD) duration of consultation (min)
| Number of problems | Telephone | Face to face | Mean duration per problem telephone | Mean duration per problem face to face |
| 1 | 4.52 (6.16) | 9.30 (5.55) | 4.52 (6.16) | 9.30 (5.55) |
| 2 | 3.60 (2.15) | 9.14 (2.75) | 1.80 (1.07) | 4.57 (1.38) |
| 3 | 8.60 (5.09) | 10.77 (4.01) | 2.87 (1.07) | 3.59 (1.34) |
| 4 | n/a | 11.69 (0.43) | n/a | 2.92 (0.10) |