Table 3 Means (standard deviations) of background factors for those granted DP due to MSD, DP, and those not granted DP in the twin cohort
| Â | DP due to MSD | DP in general | No DP | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Men | Women | Men | Women | Men | Women | ||||||
| Â | MZ | DZ | MZ | DZ | MZ | DZ | MZ | DZ | MZ | DZ | MZ | DZ |
Background factors | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) |
Follow-up time (years) | 4 (2.0) | 4 (2.2) | 4 (2.3) | 3 (2.1) | 4 (2.1) | 4 (2.2) | 4 (2.2) | 3 (2.2) | 6 (1.7) | 6 (1.7) | 6 (1.7) | 6 (1.8) |
Age at SALT-interview | 55 (3.8) | 54 (4.4) | 54 (4.6) | 54 (4.8) | 55 (3.9) | 54 (4.6) | 54 (4.5) | 54 (4.7) | 53 (5.6) | 52 (5.7) | 52 (5.8) | 53 (5.8) |
Education (years) | 10 (1.8) | 10 (1.9) | 11 (2.2) | 10 (2.1) | 11 (2.2) | 10 (2.3) | 11 (2.5) | 11 (2.3) | 12 (2.6) | 11 (2.5) | 12 (2.5) | 11 (2.5) |