The study was conducted as a quasi-experimental model with a control group among postpartum women following caesarean delivery in the maternity hospital in a city in Eastern Turkey between September 2009 and February 2011. Study data were collected initially in the hospital and then in the homes of the postpartum women.

The study population consisted of postpartum women who had had caesarean full-term delivery at the study hospital between the dates stated and who resided in the city center.

The minimum sample size was calculated via power analysis and determined to be 84. In this study, the representative power of the sample population was found to be 0.90 with 0.95 confidence interval at α = 0.05 level [23] . However, considering the possibility that some postpartum women might withdraw from the study for a variety of reasons, the sample size was increased by 60% to 134 (65 for the experimental group, 69 for the control group). The sample group for the study was selected using the non-probability random sampling method from the population stated above. The control group was included in the study at first and then continued with the experimental group.

Inclusion criteria for the sample group: Mothers aged 15 - 49 years old, mothers or their infants with no illnesses or disabilities, mothers with no loss of sense related to vision or hearing; mothers open to communication and cooperation.

The data were collected using face-to-face interviews conducted by the researchers. The Personal Information Form and Postpartum Follow-up Form designed by the researchers were used to collect data. The Personal Information Form was completed by all postpartum women approximately 24 hours after their caesarean section. The Postpartum Follow-up Form used in establishing the nursing diagnoses was administered in the homes of the postpartum women after they had been discharged. This form was given to the postpartum women in the experimental group during seven home visits in total (first week twice a week, then once a week), twice in the first week after delivery and once in the 2^nd, 3^rd, 4^th, 5^th and 6^th weeks. The form was administered for those in the control group only once at the end of the 6^th week.

Personal Information Form. This form was prepared by the researchers and comprised 10 questions to determine the socio-demographic characteristics of the postpartum women.

Postpartum Follow-Up Form. This form developed by the researchers based on Roy’s Adaptation Model in line with the related literature and is a form including the subsystems Adaptive Modes [22] [24] - [32] . Adaptive Modes have four subparts: the physiological mode, the self-concept mode, the role function mode and the interdependence mode. Expert opinion was sought during development of this form. In order to test the comprehensibility of the Postpartum Follow-up Form, a pilot test was performed on seven postpartum women. Following the pilot test, necessary corrections were made in designing the final shape of the form. Those who were in the pilot test were not included in the sample group.

In the nursing care given to postpartum women, suitable nursing diagnoses approved by NANDA were made, depending on the individual. The first nursing intervention focused on the determined nursing diagnoses was applied in the homes of the postpartum women using the care plan form containing these preprepared nursing diagnoses. Nursing process was used in nursing interventions and the Postpartum Follow-up Form was used in evaluating the intervention results. If the determined problem had resolved, a problem is resolved evaluation was made; if not, a problem is ongoing evaluation was made.

A total of seven home visits were made to the postpartum women in the experimental group twice in the first week after delivery and once in the 2^nd (between 8 - 14 days), 3^rd (between 15 - 21 days), 4^th (between 22 - 28 days), 5^th (between 29 - 35 days) and 6^th (between 36 - 42 days) weeks. Existing diagnoses and possible new diagnoses were evaluated by the Postpartum Follow-up Form. During each visit the diagnoses determined at the previous visit were evaluated regarding their resolution. Necessary interventions were maintained for the continuing diagnoses. Nursing interventions focusing on newly occurring diagnoses and possible new diagnoses were made as required and these were evaluated during the following visit. At the end of each visit an appointment was made for the next visit. In addition, the telephone numbers of the researchers were given to the postpartum women so that they could contact them at any time. Care results were evaluated after the postpartum period ended.

The home visit was made to the postpartum women in the control group at the end of the 6^th week of postpartum, the existing diagnoses were evaluated after the necessary data was collected and nursing interventions oriented to the diagnoses were performed.

Coding and evaluation of the data were performed using the SPSS 11.0 software program. In the data evaluation the percentage, arithmetic mean and standard deviation, Chi-square and McNamer tests were used. The confidence interval was 95% and a p < 0.05 was considered statistically significant.

Before commencing the study, written permission was obtained from the hospital in which the study would be conducted. In addition, the study was submitted to the Clinical Research Ethics Committee within the body of Provincial Directorate of Health of Erzurum and approval was obtained. In order to protect the rights of the postpartum women participating in the study, the purpose and the duration of the study and the procedures to be conducted during the study were explained to them before collecting study data. All women were informed that they could withdraw from the study at any time.

The limitations of this study include the non-probability sampling method used, pretest nursing diagnoses in the control group were not established, and no home visit was made to the postpartum women in the control group during the postpartum period. Considering that not making any intervention for the problems of the postpartum women in the control group would be unethical, a home visit was made to the control group just once at the end of the postpartum period.

In the Experimental Group, for 6 weeks numerous nursing diagnoses were established for physiological requirements. Among these diagnoses, disturbed sleep pattern, fatigue, changes in comfort-pain (abdomen, breast), and constipation could not be resolved, despite all suitable interventions being made during all postpartum visits. When the diagnoses determined at the first and the last interviews were compared, the difference between all other diagnoses—with the exception of constipation (p > 0.05), functional incontinence (p > 0.05) and stress incontinence (p > 0.05)—was statistically significant (p < 0.05).

In the Control Group, in the evaluation made in the 7^th week the following diagnoses were established: risk of infection and transmitting infection, ineffective breast feeding, interruption of breast feeding, imbalanced nutrition: more than the body’s requirement, disturbed sleep pattern, fatigue, changes in comfort-pain (abdomen, breast), impaired skin integrity, insufficiency ineffective health maintenance and impaired physical mobility.

When the diagnoses of the postpartum women in the experimental and control groups determined during the last interview for physiological requirements were compared, the difference between most diagnoses was statistically significant (p < 0.05). The fact that the majority of the nursing diagnoses for physiological requirements were resolved shows the effectiveness of the care given according to Roy’s Adaptation Model. The reason for the diagnosis of disturbed sleep pattern, one of the diagnoses that could not be resolved, was associated with the high number of visits and the postpartum women not receiving sufficient support for their daily housework and infant care. Similarly, in Nazik’s (2009) study, one of the diagnoses that could not be resolved was disorder in the sleep routine. Some other studies have also determined that women in the postpartum period had sleep disorders [18] [33] - [35] .

The fatigue diagnosis is also considered as not resolved due to the lack of people to help the postpartum women in their domestic responsibilities and infant care. Again, this was also the case in Nazik’s (2009) study, and Rychnovsky and Hunter’s (2009) study concluded that sleep disorders in postpartum women in the postpartum period increased their fatigue [33] [36] . Similarly, in the studies of Gungor et al. (2004), Guner (2007) and Doganer (2005), fatigue was one of the problems experienced by postpartum women [18] [34] [35] .

The fact that changes in comfort-pain (abdomen) diagnosis could not be resolved is considered to be due to the longer recovery process of postpartum women following caesarean delivery, compared to those who had a vaginal delivery. In Nazik’s (2009) study the reason for resolution of the change in comfort (perineum) diagnosis might be associated with different delivery methods [33] . In the study conducted by Gungor et al. (2004) to evaluate the problems of postpartum women who had had caesarean delivery, abdominal strain, pain and gas complaints were observed [18] .

The reason why changes in comfort-pain (Breast) could not be resolved is considered related to the fact that postpartum women who had undergone a surgical operation failed to take the correct position for breastfeeding, which ultimately causes problems in the breasts as a complication. In Nazik’s (2009) study, the diagnosis of change in comfort (breast) was remedied; once again this may be due to the differences in the delivery methods [33] . Similar to the study result, Gungor et al. (2004) found that “difficulty in breastfeeding and breast problems” was one of the physical problems identified [18] .

It was determined that the constipation diagnosis decreased as the time after surgery increased. This diagnosis could not be resolved in one of the postpartum woman; however, she had had continuous constipation even before pregnancy and thus this lack of resolution might be associated with the related condition. In Doganer’s (2005) study, it was also found that postpartum women had constipation in the postpartum period [34] .

In the experimental group, the following diagnoses for self-concept requirements were established: loneliness, situational low self-esteem, knowledge deficit (nutrition), knowledge deficit (hygiene), knowledge deficit (breastfeeding), knowledge deficit (family planning), and disturbed body image. Of these diagnoses, situational low self-esteem and disturbed body image diagnoses could not be resolved. When the diagnoses determined in the first and the last interviews were compared, the difference between all other diagnoses (with the exception of knowledge deficit-family planning) was statistically significant (p < 0.05).

In the control group, the following diagnoses were established in the evaluation carried out in the 7^th week: loneliness, situational low self-esteem, knowledge deficit (nutrition), knowledge deficit (hygiene), knowledge deficit (breastfeeding), knowledge deficit (family planning), and disturbed body image.

When the diagnoses of the postpartum women in the experimental and control groups determined during the last interview in terms of self-concept requirements were compared, the difference between all other diagnoses (with the exception of disturbed body image) was statistically significant (p < 0.05). The fact that the majority of the nursing diagnoses for self-concept requirements were resolved shows the effectiveness of the care given according to Roy’s Adaptation Model.

One of the diagnoses that could not be recovered, situational low self-esteem, is considered to be due to hormonal fluctuations, physical and social changes, mood changes after birth, social isolation, fatigue, failure in adapting to the motherhood role and lack of people to help the postpartum women in their domestic responsibilities and infant care. Failure in providing the postpartum women with the required support postpartum in this period might adversely affect their physical and mental health. Similarly, in the study by Najman et al. (2000), reported women experiencing low self-esteem during the postpartum period [37] .

The reason behind why the disturbed body image diagnosis could not be resolved is considered to be due to reasons such as having been undergone a surgical operation, not being able to quickly lose the weight gained during pregnancy and the change in the interest of the husband from his wife to the baby. In the studies conducted by Gungor et al. (2004) and Doganer (2005), postpartum women also stated that they experienced negative body image [18] [34] .

In the experimental group, the following diagnoses were established for role function requirements: caregiver role strain, risk of ineffective parenthood, impaired home maintenance and social isolation. Of these diagnoses, the risk of ineffective parenthood, impaired home maintenance and social isolation were resolved. The diagnosis of caregiver role strain could not be resolved, despite all the suitable interventions made during all postpartum visits. When the diagnoses determined in the first and last interviews were compared, the difference for all diagnoses was statistically significant (p < 0.001).

In the control group, the following diagnoses for role function requirements were established: caregiver role strain, caregiver role strain and social isolation.

When the diagnoses of postpartum women in the experimental and control groups determined in the last interview in terms of role function requirements were compared, the difference between all diagnoses was statistically significant (p < 0.05). The fact that the majority of the diagnoses determined in terms of role function requirements were resolved shows the effectiveness of the care given according to Roy’s Adaptation Model.

The fact that caregiver role strain diagnosis could not be resolved is considered to be due to the lack of people to help the postpartum women in their domestic responsibilities and infant care. Studies conducted by Gungor et al. (2004), Guner (2007) and Doganer (2005) support this finding that postpartum women had difficulty caring for themselves and their babies [18] [34] [35] . In their study, Logsdon and Koniak-Griffin (2005) indicated that providing the mothers with sufficient support in the postpartum period, when both physical and psychological changes are intensely experienced, would positively affect their physical and mental health [38] .

In the experimental group, the following diagnoses for interdependence requirements were established: change the role of parental, interruption family processes and conflict in the parental role. When the diagnoses identified in the first and last interviews were compared, the difference between the majority of diagnoses was statistically significant (p < 0.001).

In the control group, for interdependence requirements, the diagnosis of interruption family processes was established.

When the diagnoses of postpartum women in the experimental and control groups determined in the last interview in terms of interdependence requirements were compared, the difference between diagnosis of interruption family processes was statistically significant (p < 0.05). The fact that all the diagnoses for interdependence requirements were resolved shows that the care given according to Roy’s Adaptation Model was efficient. As a result of the care given to the postpartum women in the postpartum period based on Roy’s Adaptation Model, fewer problems were experienced. This result shows that the hypothesis of “The care given using Roy’s Adaptation Model to postpartum women who had had caesarean delivery reduces or prevents the frequency of postpartum problems” is verified. Similarly, in the studies conducted by Kiliç (2011), Nazik (2009) and Koç (2005) using the model, the care given during the postpartum period also decreased/prevented the postpartum complications [33] [39] [40] . The mentioned studies produced similar results, since they provided model-based care. In the studies using the models it was observed that the care results were more effective and systematic. Furthermore, in the studies of De la Rosa et al. (2009) and Wager et al. (2004), it was found that postpartum home visits positively affected maternal and infant health [41] [42] . However, although the results in these studies were positive, they had solved fewer problems and were less systematic.