Table 1.
Demographic, physical, and mental health characteristics of Delta Study participants at follow-ups (N=2064).
| Characteristic | Total (N=2064) | 6 months (n=1779) | 12 months (n=1542) | |||||
| Demographic characteristics | ||||||||
|
|
Age (years), mean (SD) | 28.97 (7.49) | 29.08 (7.49) | 29.3 (7.55) | ||||
|
|
BMI, mean (SD) | 28.46 (7.69) | 28.54 (7.68) | 28.64 (7.78) | ||||
|
|
Sex, n (%) | |||||||
|
|
|
Male | 559 (27.08) | 490 (27.54) | 440 (28.53) | |||
|
|
|
Female | 1505 (72.92) | 1289 (72.46) | 1102 (71.47) | |||
|
|
Education, n (%) | |||||||
|
|
|
GCSEa or lowerb | 381 (18.46) | 327 (18.38) | 278 (18.03) | |||
|
|
|
Advanced levelb | 610 (29.55) | 534 (30.02) | 443 (28.73) | |||
|
|
|
Undergraduate | 726 (35.17) | 616 (34.63) | 553 (35.86) | |||
|
|
|
Postgraduate | 347 (16.81) | 302 (16.98) | 268 (17.38) | |||
|
|
Employment, n (%) | |||||||
|
|
|
Employed | 1169 (56.64) | 1021 (57.39) | 874 (56.68) | |||
|
|
|
Self-employed | 113 (5.47) | 90 (5.06) | 80 (5.19) | |||
|
|
|
Student | 449 (21.75) | 388 (21.81) | 325 (21.08) | |||
|
|
|
Unemployed | 314 (15.21) | 265 (14.90) | 249 (16.15) | |||
| Physical health | ||||||||
|
|
Physical illness, n (%) | |||||||
|
|
|
Thyroid disease | 100 (4.84) | 86 (4.83) | 76 (4.93) | |||
|
|
|
Multiple sclerosis | 5 (0.24) | 4 (0.22) | 5 (0.32) | |||
|
|
|
Diabetes | 45 (2.18) | 39 (2.19) | 39 (2.53) | |||
|
|
|
Cardiovascular disease or stroke | 13 (0.63) | 12 (0.67) | 10 (0.65) | |||
|
|
|
Chronic bowel problems | 195 (9.45) | 168 (9.44) | 145 (9.40) | |||
|
|
|
Chronic pain (current) | 474 (22.97) | 404 (22.71) | 359 (23.28) | |||
|
|
|
Migraine (moderate-severe) | 402 (19.48) | 346 (19.45) | 297 (19.26) | |||
|
|
|
Blood-borne illnesses | 15 (0.73) | 13 (0.73) | 8 (0.52) | |||
|
|
Self-rated physical health, n (%) | |||||||
|
|
|
Poor | 666 (32.27) | 570 (32.04) | 496 (32.17) | |||
|
|
|
Fair | 773 (37.45) | 655 (36.82) | 584 (37.87) | |||
|
|
|
Good | 626 (30.28) | 554 (31.14) | 462 (29.96) | |||
| Mental health | ||||||||
|
|
Psychiatric diagnoses, n (%) | |||||||
|
|
|
Any diagnosis | 1534 (74.32) | 1328 (74.59) | 1154 (74.84) | |||
|
|
|
Major depressive disorder | 1441 (69.82) | 1244 (69.93) | 1092 (70.82) | |||
|
|
|
Bipolar disorder | 153 (7.41) | 133 (7.48) | 113 (7.33) | |||
|
|
|
Generalized anxiety disorder | 889 (43.56) | 763 (42.89) | 676 (43.84) | |||
|
|
|
Social anxiety | 381 (18.46) | 318 (17.88) | 289 (18.74) | |||
|
|
|
Panic disorder | 210 (10.17) | 168 (9.44) | 155 (10.05) | |||
|
|
|
Borderline personality disorder | 187 (9.06) | 167 (9.39) | 135 (8.75) | |||
|
|
|
Obsessive compulsive disorder | 149 (7.22) | 120 (6.75) | 106 (6.87) | |||
|
|
|
An eating disorder | 164 (7.95) | 141 (7.93) | 111 (7.20) | |||
|
|
|
Schizophrenia | 4 (0.19) | 3 (0.17) | 3 (0.19) | |||
|
|
Self-rated mental health, n (%) | |||||||
|
|
|
Poor | 1402 (67.93) | 1197 (67.28) | 1025 (66.47) | |||
|
|
|
Fair | 554 (26.84) | 485 (27.26) | 433 (28.08) | |||
|
|
|
Good | 108 (5.23) | 97 (5.45) | 84 (5.45) | |||
aGCSE: General Certificate of Secondary Education.
bThe General Certificate of Secondary Education and the Advanced level are academic qualifications taken by students enrolled in secondary education in the United Kingdom. These are taken after 11 and 13 years of education (upon school leaving), respectively.