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Table 2 Characteristics of non-participants vs. participants.

From: Measurement properties of the Minimal Insomnia Symptom Scale (MISS) in an elderly population in Sweden

Variables

Non-participants (n = 344)

Participants (n = 548)

p-value1

Age mean (SD)

83.2 (9.8)

77.8 (8.6)

< 0.001

Sex

  

0.302

   Female %

39.9

60.1

 

   Male %

36.2

63,8

 

Angina Pectoris %

48.8

51.2

0.014

Arthritis %

43.0

57.0

0.183

Cancer %

43.0

57.0

0.328

Chronic heart failure %

62.2

37.8

0.001

Depression %

43.9

56.1

0.236

Diabetes type 2 %

53.8

46.2

0.012

Hypertension %

44.8

55.2

0.019

Osteoporosis %

55.2

44.8

0.084

  1. 1) Chi-square test and Mann-Whitney U-test. For the Chi-square test Yates' correction has been used.
  2. Internal drop-out on variables was 0-1.2% accept for osteoporosis (10.5%) and arthritis (17.1%).