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Table 1 Completion of measures, 2,6 and 12 months

From: Sleep patterns and psychosocial health of parents of preterm and full-born infants: a prospective, comparative, longitudinal feasibility study

  2 months postpartum 6 months postpartum 12 months postpartum
  Mothers Fathersc Mothers Fathersc Mothers Fathersc
Group A Preterm group       
 n (%) 25 (100%) 25 (100%) 21 (100%) 21 (100%) 17 (100%) 17 (100%)
Questionnaire       
 Responders 16 (64.0) 14 (56.0) 9 (42.9) 6 (28.6) 10 (58.9) 8 (47.0)
 Non- responders 9 (36.0) 11 (44.0) 12 (57.1) 15 (71.4) 7 (41.1) 9 (52.9)
Actigraphy       
 Compliant dataa 18 (72.0) 18 (72.0)     
 Non- compliant data 7 (28.0) 7 (28.0)     
 Device error       
Sleep diary       
 Compliant datab 18 (72.0) 18 (72.0)     
 Non- compliant data 7 (28.0) 7 (28.0)     
Group B Full- born group       
 n (%) 76 (100%) 76 (100%) 61 (100%) 61 (100%) 60 (100%) 60 (100%)
Questionnaire       
 Responders 58 (76.3) 46 (60.5) 39 (63.9) 31 (50.8) 30 (50.0) 31 (51.6)
 Non -responders 18 (23.7) 30 (39.4) 22 (36.0) 30 (49.1) 30 (50.0) 29 (48.3)
Actigraphy       
 Compliant dataa 53 (69.7) 53 (69.7)     
 Non- compliant data 21 (27.6) 23 (30.2)     
 Device error 2 (2.6)      
Sleep diary       
 Compliant datab 51 (67.1) 51 (67.1)     
 Non- compliant data 25 (32.9) 25 (32.8)     
  1. a Compliant data were defined as ≥ 1 day with ≥ 24 h of daily wear time on accelerometer
  2. b Compliant data were defined as ≥ 1 day with ≥ 24 h of response to sleep diary
  3. c Including Non- birthgiving mothers