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Table 4 Baseline characteristics of responders and non-responders

From: A randomised controlled trial to assess the effectiveness of offering study results as an incentive to increase response rates to postal questionnaires [ISRCTN26118436]

Variable

Responders

Non-responders

p value

Age (mean, SD)

76.32 (4.62) n = 954

77.43 (5.22) n = 63

0.07

Weight (Kilos, mean SD)

65.54 (12.06) n = 912

62.29 (10.93)

0.04

Percent (n) < 58 kilos

30.8% (281/912)

35.5% (22/62)

0.02

Prior any fracture to randomisation

59.4% (567/954)

61.9% (39/63)

0.80

Smoker

4.5% (30/671)

23.9% (11/46)

< 0.05

Poor/Fair Health

31.7% (302/953)

46.0% (29/63)

0.03

Maternal hip fracture

14.0% (134/954)

12.7% (8/63)

0.91

Falls in 12 month prior to randomisation

32.3% (308/954)

41.3% (26/63)

0.18

Taking anti-fracture treatment

5.0% (48/954)

3.2% (2/63)

0.72

SF12

   

MCS (mean; SD)

52.63 (8.78) n = 929

48.53 (10.6) n = 60

0.01

PCS (mean; SD)

41.29 (11.68) n = 929

37.66 (13.36) n = 60

0.02

Euroqol

0.73 (0.22) n = 938

0.62 (0.30) n = 62

0.01