The three fundamental goals of early rehabilitation for preterm infant after leaving NICU are: optimizing function within each child's prognostic potential, preventing the development of secondary conditions that impact life-long health, and promoting children's participation and qualities in their lives. Understanding knowledges of these developmental patterns of Function and Participation in Life Activities (FPLA) and HRQOL may be helpful for anticipating and managing the problems. This study hypothesizes that the course of developmental patterns in FPLA and HRQOL of preterm infant evolve with their age. The functional recovery levels include developmental function, health, activity, participation, and quality of life (QOL).

Since the previous plan only passed one year and encountered the COVID-19, the number of cases was not as expected. Therefore, this study will use the previous plan to test the functions of reliability, validity, and the evaluation of daily life participation to investigate the long-term performance of premature infants. Vertical development model under tracking. In addition, it is also expected to identify predictors related to the prognosis of preterm infants and compared with the healthy children of the Taiwan Early Childhood Development Survey Database (KIT) to find out the key differences in the developmental function and health of premature infants and healthy children. This study is a three-year longitudinal study of premature infants. It was carried out for three years. 60 full-term children aged 0-3 years and 150 premature infants aged 0-3 years were collected. A total of 210 children underwent a three-year period study. During the follow-up period, in addition to the initial evaluation, each subject will be followed up at 3 months, 6 months, 12 months, 18 months, and 24 months, toddlers( >24months) will be followed up once a year according to the age of KIT's admission, and we will provide caregiver assessment report. We believe the results of this study will improve and support services provided to preterm infants.

Preterm Infant is defined as a group of patients whose gestational age is lower than 37 weeks due to either iatrogenic reasons or maternal reasons. Preterm infant could be classified into 4 group according to gestational age: very early preterm infant, early preterm infant, midterm preterm infant, and late preterm infant. Moreover, they could be categorized into 3 groups of birth weight: extremely low birth weight, very low birth weight, and low birth weight. These varies of preterm infant are indicated to have further developmental and body-functional difficulties and lags. Under the basis of International Classification of Functioning, Disability and Health-Children and Youth Version (ICF-CY) framework, problems related to Preterm infant would further limit their activities of daily living (ADL), participation, and health related quality of life (HRQOL).

The three fundamental goals of early rehabilitation for preterm infant after leaving NICU are: optimizing function within each child's prognostic potential, preventing the development of secondary conditions that impact life-long health, and promoting children's participation and qualities in their lives. Understanding knowledges of these developmental patterns of Function and Participation in Life Activities (FPLA) and HRQOL may be helpful for anticipating and managing the problems. This study hypothesizes that the course of developmental patterns in FPLA and HRQOL of preterm infant evolve with their age. The functional recovery levels include developmental function, health, activity, participation, and quality of life (QOL).

Since the previous plan only passed one year and encountered the COVID-19, the number of cases was not as expected. Therefore, this study will use the previous plan to test the functions of reliability, validity, and the evaluation of daily life participation to investigate the long-term performance of premature infants. Vertical development model under tracking. In addition, it is also expected to identify predictors related to the prognosis of preterm infants and compared with the healthy children of the Taiwan Early Childhood Development Survey Database (KIT) to find out the key differences in the developmental function and health of premature infants and healthy children. This study is a three-year longitudinal study of premature infants. It was carried out for three years. 60 full-term children aged 0-3 years and 150 premature infants aged 0-3 years were collected. A total of 210 children underwent a three-year period study. During the follow-up period, in addition to the initial evaluation, each subject will be followed up at 3 months, 6 months, 12 months, 18 months, and 24 months, toddlers( >24months) will be followed up once a year according to the age of KIT's admission, and we will provide caregiver assessment report. We believe the results of this study will improve and support services provided to preterm infants.

Inclusion Criteria:

1. infants with less than 37 weeks of gestation。
2. aged 0-3 years old。
3. caregivers agree and cooperate
4. stable health condition -

Exclusion Criteria:

1. acute health conditions such as infection
2. caregivers or parents cannot communicate in Madarine Chinese.-

150 preterm children and 60 fullterm children