Effective FGID patients in total ( ) [20 ] Patients with 1 FGID diagnosis ( ) Patients with >1 FGID diagnoses ( ) valueSociodemographic characteristics Age—years2 271 38.00 [23.00] 39.00 [24.00] 35.50 [24.00] 0.548c Gender—female, (%) 271 195 (72.00) 96 (68.09) 99 (76.15) 0.140b Nationality—German, (%) 265 249 (94.00) 130 (95.59) 119 (92.25) 0.254b Marital status—with a partner, (%) 271 152 (56.10) 81 (57.45) 71 (54.62) 0.639b Educational level—ISCED ≤2, (%) 271 126 (46.50) 65 (46.10) 61 (46.92) 0.892b Paid employment, (%) 271 144 (53.10) 77 (54.61) 67 (51.54) 0.613b Old-age pension, (%) 271 32 (11.81) 15 (10.64) 17 (13.08) 0.534b Disability pension, (%) 271 8 (3.00) 3 (2.13) 5 (3.85) 0.486b Gastrointestinal symptoms Symptom duration—months2 255 48.00 [101.00] 48.00 [76.00] 48.00 [101.00] 0.548c Symptom severity (IBS-SSS)2 267 290.00 [169.00] 232.00 [162.50] 339.00 [126.00] <0.001 c Stool consistency Loose (BSFS 1, 2), (%) 266 190 (71.43) 100 (72.46) 90 (70.31) 0.698 Normal (BSFS 3, 4), (%) 266 126 (47.37) 64 (46.38) 62 (48.44) 0.737 Hard (BSFS 5, 6, 7), (%) 266 86 (32.33) 45 (32.61) 41 (32.03) 0.920 Any mental disorder, (%) 250 188 (75.20) 92 (71.88) 96 (78.69) 0.212b Somatization (PHQ-15) Any somatoform syndrome, (%) 255 166 (65.10) 79 (60.77) 87 (69.60) 0.139b PHQ-15 (range 0-30)2 250 13.00 [7.00] 12.00 [6.41] 14.00 [5.98] 0.008 c PHQ-12 (range 0-24)2 250 8.00 [5.71] 7.00 [5.00] 8.00 [5.00] 0.028 c SSS-8 (range 0-32)2 261 13.00 [9.07] 11.43 [9.00] 14.00 [10.00] 0.001 c Depression (PHQ-9) Any depressive syndrome, (%) 262 108 (41.22) 56 (41.48) 52 (40.94) 0.930b Major depressive syndrome, (%) 263 66 (25.10) 36 (26.67) 30 (23.43) 0.546b Other depressive syndrome, (%) 263 42 (15.97) 20 (14.81) 22 (17.19) 0.600b PHQ-9 (range 0-27)2 269 9.00 [7.37] 8.00 [8.00] 9.00 [7.50] 0.189c Anxiety (GAD-7; PHQ panic module) Any anxiety syndrome, (%) 258 48 (18.60) 24 (18.18) 24 (19.05) 0.858b Other anxiety syndrome, (%) 259 30 (11.58) 15 (11.36) 15 (11.81) 0.910b Panic syndrome, (%) 263 27 (10.27) 15 (11.11) 12 (9.38) 0.643b GAD-7 (range 0-21)2 267 7.00 [8.00] 7.00 [8.50] 7.00 [8.00] 0.725c Other psychosocial features Illness anxiety (WI-7; range 0-28)2 264 11.00 [10.00] 10.00 [10.00] 13.00 [10.25] 0.022 c Any eating disorder, (%) 261 27 (10.00) 16 (11.35) 11 (8.46) 0.428b Abuse (Rome III), (%) 253 48 (18.97) 19 (14.50) 29 (23.77) 0.060b Suicidality (Rome III), (%) 259 52 (20.07) 25 (18.80) 27 (21.43) 0.597b Quality of life FDD-QoL1 258 48.32 (15.27) 51.45 (15.20) 45.09 (14.72) 0.001 a Activities2 270 53.34 [40.63] 59.38 [41.29] 45.31 [39.17] <0.001 c Anxiety2 266 55.00 [38.13] 55.00 [41.25] 50.00 [40.00] 0.403c Diet2 265 37.50 [37.50] 41.67 [44.17] 33.33 [37.50] 0.003 c Sleep2 265 75.00 [41.67] 75.00 [33.33] 66.67 [33.33] 0.019 c Discomfort2 264 38.89 [25.00] 43.75 [27.78] 36.11 [23.61] 0.002 c Health perception2 262 37.50 [29.17] 40.00 [33.33] 33.33 [22.92] 0.021 c Disease coping2 261 41.67 [33.33] 41.67 [33.33] 33.33 [29.17] 0.173c Stress2 262 41.67 [41.67] 50.00 [41.67] 41.67 [41.67] 0.553c SF-36 Physical QoL1 250 40.44 (9.83) 42.99 (9.77) 37.64 (9.15) <0.001 a Mental QoL2 250 39.29 [21.02] 39.89 [22.06] 38.54 [19.89] 0.781c