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. 2021 Aug 23;21:176. doi: 10.1186/s12874-021-01357-z

Table 2.

Characteristics of participants of Turkish descent recruited at various steps in the NAKO study center Berlin-Center

Recruitment steps (Invitation and two reminder letters)
N = 229
Additional home visits
N = 40
Total
N = 269
Baseline variables n % (95%CI) n % (95%CI) n % (95%CI)
Gender
 Male 143 62.4 (56.0-68.5) 11 27.5 (16.1-42.8) 154 57.2 (51.3-63.0)
 Female 86 37.6 (31.5-44.0) 29 72.5 (57.2-83.9) 115 42.8 (37.0-48.7)
Age (years), mean ± SD 46.5 (11.7) 49.3 (11.0) 46.9 (11.6)
 20 - 29 31 13.5 (9.7-18.6) 4 10.0 (4.0-23.1) 35 13.0 (9.5-17.6)
 30 - 39 25 10.9 (7.5-15.6) 2 5.0 (1.4-16.5) 27 10.0 (7.0-14.2)
 40 - 49 88 38.4 (32.4-44.9) 13 32.5 (20.1-48.0) 101 37.5 (32.0-43.5)
 50 - 59 54 23.6 (18.5-29.5) 17 42.5 (28.5-57.8) 71 26.4 (21.5-32.0)
 60 - 69 31 13.5 (9.7-18.6) 4 10.0 (4.0-23.1) 35 13.0 (9.5-17.6)
Place of Birth
 Born in Turkey 164 71.9 (65.8-77.4) 35 89.7 (76.4-95.9) 199 74.5 (69.0-79.4)
 Born in Germany 64 28.1 (22.6-34.2) 4 10.3 (4.1-23.6) 68 25.5 (20.6-31.0)
German as Native Language
 No 170 74.2 (68.2-79.5) 33 84.6 (70.3-92.8) 203 75.7 (70.3-80.5)
 Yes 59 25.8 (20.5-31.8) 6 15.4 (7.2-29.7) 65 24.3 (19.5-29.7)
Level of German Language
 Good (very good; good) 87 51.5 (44.0-58.9) 12 35.3 (21.5-52.1) 99 48.8 (42.0-55.6)
 Weak (medium; bad; very bad) 82 48.5 (41.1-56.0) 22 64.7 (47.9-78.5) 104 51.2 (44.4-58.0)
Years since immigration
 0-10 years 6 3.9 (1.8-8.2) 2 6.3 (1.7-20.1) 8 4.3 (2.2-8.2)
 > 10-20 years 17 11.0 (7.0-17.0) 4 11.8 (4.7-26.6) 21 11.1 (7.4-16.5)
 > 20 years 131 85.1 (78.6- 89.8) 28 82.4 (66.5-91.7) 159 84.6 (78.7-89.0)
Marital Status
 With partner 130 56.8 (50.3-63.0) 31 77.5 (62.5-87.8) 161 60.1 (54.1-65.8)
 Without partner 98 42.8 (36.6-49.3) 9 22.5 (12.3-37.5) 107 39.9 (34.2-45.9)
Employment Status
 Fulltime/Part-time/Parental leave 135 68.5 (61.7-74.6) 17 53.1 (36.4-69.1) 152 66.4 (60.0-72.2)
 Retired 26 13.2 (9.2-18.6) 6 18.8 (8.9-35.3) 32 14.0 (10.1-19.1)
 Unemployed 31 15.7 (11.3-21.5) 7 21.9 (11.0-38.8) 38 16.6 (12.3-22.0)
 Permanently disabled 5 2.5 (1.1-5.8) 2 6.3 (1.7-20.1) 7 3.1 (1.5-6.2)
Average income per household member
 <  500 euros 56 28.3 (22.5-34.9) 14 38.9 (24.8-55.1) 70 29.9 (24.4-36.1)
 500 – 1000 euros 83 41.9 (35.3-48.9) 18 50.0 (34.5-65.5) 101 43.2 (37.0-50.0)
 1000-2500 euros 51 25.8 (20.2-32.3) 4 11.1 (4.4-25.3) 55 23.5 (18.5-29.3)
 2500-4000 euros 3 1.5 (0.5-4.4) 0 0 (0-8.8) 3 1.3 (0.4-3.7)
 > 4000 euros 5 2.5 (1.1-5.8) 0 0 (0-8.8) 5 2.1 (0.9-4.9)
Education
 Dropped out of school 21 9.2 (6.1-13.6) 7 17.5 (8.7-31.9) 28 10.4 (7.3-14.6)
 Low (< 10 years) 66 28.8 (23.3-35.0) 25 62.5 (47.0-75.8) 91 33.8 (28.4-36.7)
 Middle (10-12 years) 48 21.0 (16.2-26.7) 2 5.0 (1.4-16.5) 50 18.6 (14.4-23.7)
 High (> 12 years) 85 37.1 (31.1-43.5) 4 10.0 (4.0-23.1) 89 33.1 (27.7-38.9)
 missing 9 3.9 (2.1-7.3) 2 5.0 (1.4-16.5) 11 4.1 (2.3-7.2)
BMI, mean ± SD 28.0 (4.7) 30.6 (5.5) 28.4 (4.9)
 Normal weight (18.5 to < 25.0 kg/m2) 55 25.6 (20.2-31.8) 7 17.5 (8.7-31.9) 62 24.3 (19.5-29.9)
 Overweight (25.0 to < 30.0 kg/m2) 100 46.5 (40.0-53.2) 14 35.0 (22.1-50.5) 114 44.7 (38.7-50.8)
 Obesity (≥30.0 kg/m2) 60 27.9 (22.3-34.3) 19 47.5 (32.9-62.5) 79 31.0 (25.6-36.9)
Smoking Status
 Non-smoker 72 40.7 (33.7-48.0) 7 35.0 (18.1-56.7) 79 40.1 (33.5-47.1)
 Ex-smoker 41 23.2 (17.6-29.9) 4 20.0 (8.1-41.6) 45 22.8 (17.5-29.2)
 Current smoker 64 36.2 (29.4-43.5) 9 45.0 (25.8-65.8) 73 37.1 (30.6-44.0)
Cardiovascular Diseases
 Heart attack 6 2.6 (1.2-5.6) 1 2.5 (0.4-12.9) 7 2.6 (1.3-5.3)
 Angina pectoris 8 3.5 (1.8-6.7) 1 2.5 (0.4-12.9) 9 3.3 (1.8-6.2)
 Heart failure 5 2.2 (0.9-5.0) 2 5.0 (1.4-16.5) 7 2.6 (1.3-5.3)
 Cardiac arrhythmia 15 6.6 (4.0-10.5) 1 2.5 (0.4-12.9) 16 5.9 (3.7-9.4)
 Intermittent claudication 3 1.3 (0.4-3.8) 0 0 (0-8.8) 3 1.1 (0.4-3.2)
 Stroke 2 0.9 (0.2-3.1) 0 0 (0-8.8) 2 0.7 (0.2-2.7)
Other
 Chronic back pain 74 32.3 (26.6-38.6) 10 25.0 (14.2-40.2) 84 31.2 (26.0-37.0)
 Arthritis 27 11.8 (8.2-16.6) 6 15.0 (7.1-29.1) 33 12.3 (8.9-16.7)
 Osteoporosis 11 4.8 (2.7-8.4) 0 0 (0-8.8) 11 4.1 (2.3-7.2)
 Diabetes 23 10.1 (6.8-14.6) 8 20.0 (10.5-34.8) 31 11.5 (8.2-15.9)
 Cancer 4 1.7 (0.7-4.4) 2 5.0 (1.4-16.5) 6 2.2 (1.0-4.8)
 Depression 54 23.6 (18.5-29.5) 14 35.0 (22.1-50.5) 68 25.3 (20.5-30.8)

CI confidence interval, SD standard deviation, BMI body mass index