The Effectiveness of Nutrition and Physical Activity Intervention on Psychosocial Well-Being of Mothers With Preterm Infants in Selangor

Postpartum Sleep Quality Scale (PSQS)

Time Frame: Change from Baseline Sleep Quality Status at 8 weeks

The Postpartum Sleep Quality Scale (PSQS) consists of 14 item scale, designed to assess subjective sleep quality during postpartum periods. Two domains were developed from the PSQS: "Factor 1: Infant night care-related daytime dysfunction", and "Factor 2: Physical symptoms related sleep inefficiency". Factor 1 explained how having care of infants at night impacted the quality of postpartum woman's sleep and the ability to handle daytime activities. Factor 2 described the physiological factors underlying sleep and sleep inefficiency symptoms of a woman. The PSQS found to be a valid and reliable tool, as previous study had demonstrated PSQS have adequate internal consistency between the item (Cronbach's α= 0.88; Factor I α =0.89, Factor II α= 0.82).

Perceived Stress Scale (PSS)

Time Frame: Change from Baseline Perceived Stress Status at 8 weeks

The Perceived Stress Scale (PSS) was developed by Sheldon Cohen \& Williamson (1988), designed to measure the degree to which circumstances of an individual are considered stressful via their feelings and thoughts in the past month. The item asked regarding the current levels of stress, unpredictable, uncontrollable, and overloaded events, unexpectedly occur during their lives. The PSS consist of 10 items, derived from 5-point Likert scale (0= never, 1= almost never, 2= sometimes, 3= fairly often, 4= very often). Four items that are positively stated (item 4,5,7, and 8) are scored reversely (0= very often, 1= fairy often, 2= sometimes, 3= almost never, 4= never). The total score is calculated from the sum of 10 items, whereas higher scores indicate higher levels of perceived stress. In this study, Malay version of PSS-10 is used to enable participants to understand the questions asked and to make the assessment more culturally appropriate.

Edinburgh Postnatal Depression Scale

Time Frame: Change from Baseline Depression Screening Status at 8 weeks

The presence of depressive symptoms will be assessed using the Edinburgh Postnatal Depression Scale (EPDS). The EPDS is a 10-item self-administered questionnaire designed specifically to measure postpartum depression. All items will be rated on a 4-point Likert-type scale, with a total score ranging from 0-30. Categories of response are scored 0,1,2, and 3 based on increased symptom severity. EPDS can only be used for screening but not for the clinical diagnosis of depression. The Malay version of the scale was validated in the local setting with the cut off 11/12 was used to determine a woman at risk of having depressive symptoms. Score of ≥12 indicates the presence of postpartum depression whereas \<12 indicates absence of postpartum depression.

Positive Affect Balance Scale (PABS)

Time Frame: Change from Baseline Psychosocial Well-being Status at 8 weeks

This scale consist of 10 item scales, which 5 items were developed for each positive and negative affect components, asking the psychological reactions of people respond to their daily lives, and individual's ability to cope with daily stresses. "Positive affect" questions are associate to social participation, satisfaction with social life, and engagement in activities. Three-point scale of "never", "sometimes", or "often" are answers made to the questions represents the past week's experiences. All calculations of positive affect score, a negative affect score and a total affect balance score can be made. The positive impact score (ranging from 5 to 15) with 15 being the highest (most positive result) will be used in this study. PABS has been proven to be a reliable tool for measuring psychosocial well-being, as reported by previous study.