Table 1

Reasons for non-participation (n=1,200, 37% women) at baseline recruitment of GOS, stratified by sex
Group Subgroup Men n=756 Women n=444 Total n=1200
Personal Reason/ Disinterest Disinterested / can't be bothered /does not want to 299 (39.6) 162 (36.5) 461 (38.4)
Personal reasons 15 (2.0) 10 (2.3) 25 (2.1)
No wish to uncover medical problem 6 (0.8) 10 (2.3) 16 (1.3)
Invasion of privacy 2 (0.3) 3 (0.7) 5 (0.4)
Interference from family 0 (0.0) 5 (1.1) 5 (0.4)
Religious / philosophical reasons 1 (0.1) 2 (0.5) 3 (0.3)
Overall 323 (42.7) 192 (43.2) 515 (42.9)
Contribution to chi square 0.01 0.01
Frailty / Inability to cope with or understand the study Frailty/infirmity or too old 68 (9.0) 50 (11.3) 118 (9.8)
Other Illness 54 (7.1) 42 (9.5) 96 (8.0)
Unable to cope with involvement due to old age 10 (1.3) 28 (6.3) 38 (3.2)
Cancer 2 (0.3) 13 (2.9) 15 (1.3)
Illness associated with fracture 4 (0.5) 1 (0.2) 5 (0.4)
Unable to understand the study due to old age 3 (0.4) 2 (0.5) 5 (0.4)
Overall 141 (18.7) 136 (30.6) 277 (23.1)
Contribution to chi square 6.44 10.96
Time constraints Too busy 97 (12.8) 33 (7.4) 130 (10.8)
Work commitments 93 (12.3) 5 (1.1) 98 (8.2)
Home commitments 9 (1.2) 8 (1.8) 17 (1.4)
Overall 199 (26.3) 46 (10.4) 245 (20.4)
Contribution to chi square 12.92 21.99
Undeterminable reason No reason given 39 (5.2) 4 (0.9) 43 (3.6)
Repeated failure to keep appointment 16 (2.1) 6 (1.4) 22 (1.8)
Overall 55 (7.3) 10 (2.3) 65 (5.4)
Contribution to chi square 4.82 8.21
Reluctance over medical testing Avoiding unnecessary tests 3 (0.4) 19 (4.3) 22 (1.8)
Avoiding further exposure to x-rays 5 (0.7) 14 (3.2) 19 (1.6)
Fear of Hospitals 0 ( − ) 9 (2.0) 9 (0.8)
Fear of needles (venipuncture) 0 ( − ) 2 (0.5) 2 (0.2)
Overall 8 (1.1) 44 (9.9) 52 (4.3)
Contribution to chi square 18.71 31.86
Language-related issues Language problems: Overall 18 (2.4) 7 (1.6) 25 (2.1)
Contribution to chi square 0.32 0.55
Travel-related issues Too far to travel (living within study region) 11 (1.5) 9 (2.0) 20 (1.7)
Too far to travel (has moved out of the region) 1 (0.1) 0 (− ) 1 (0.1)
Overall 12 (1.6) 9 (2.0) 21 (1.8)
Contribution to chi square 0.11 0.20
Total 756 (100) 444 (100) 1,200

Pearson’s chi-square = 117.101, DF = 6, p value < 0.001.

Data are shown as n (%).

Markanday et al.

Markanday et al. BMC Research Notes 2013 6:104   doi:10.1186/1756-0500-6-104

Open Data