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  • Research article
  • Open Access
  • Open Peer Review

Factors associated with the time to cessation of breastfeeding among mothers who have index children aged two to three years in Debre Markos, northwest Ethiopia: a retrospective follow up study

  • 1Email author,
  • 2 and
  • 1
BMC PediatricsBMC series – open, inclusive and trusted201818:77

https://doi.org/10.1186/s12887-018-1012-3

  • Received: 29 October 2016
  • Accepted: 28 January 2018
  • Published:
Open Peer Review reports

Abstract

Background

Breastfeeding of children, which needs to continue until two years and beyond, is one of the essential requirements for child survival. However, in Ethiopia there is scarcity of literatures on the duration of breastfeeding. Therefore, the aim of this study was to assess the rate of cessation of breastfeeding among mothers with index children aged 2 to 3 years, northwest Ethiopia.

Methods

A retrospective follow-up study was conducted at Debre Markos town from March 1, 2014 to March 30, 2016. A total of 500 mother-child pairs were selected using the systematic random sampling method by moving from house to house with an interval of three eligible houses. A structured questionnaire was used to collect data. The Cox regression model was employed to identify the predictors of breastfeeding cessation.

Results

The proportion of women breastfeeding until 2 years was 13.70 per 1000 person- months. HIV-positive mothers decreased the time of breastfeeding by 3.4 times compared to HIV-negative mothers (AHR = 3.41, 95% CI: 1.96, 5.94). Government employee mothers decreased the time of breastfeeding by 2.8 times compared to housewives (AHR = 2.8, 95% CI: 1.80, 4.40).Better education increased the time of breastfeeding (AHR = 0.45, 95% CI: 0.24, 0.58). Number of children, family income, and place of delivery were the other significant predictors of time to cessation of breastfeeding (p < 0.05).

Conclusion

In this study, the rate of cessation of breastfeeding was good. HIV negative mothers, government employment, number of children, place of delivery, and family monthly income were significant predictors to the time of breastfeeding cessation. Therefore, family planning and breastfeeding education in health institutions are essential to increase breastfeeding duration.

Keywords

  • Ethiopia
  • Cessation of breastfeeding
  • Factors 

Background

Breast milk, the first natural food for children, has nutritional, immunological, developmental, and psychological advantages [1]. The World Health Organization (WHO) recommends that children should be breastfed until 2 years of age or beyond [2].The promotion of children breastfeeding until 2 years is one of the indicators of appropriate child feeding practices [3].

Although breastfeeding practice is universal in Africa, where more than 90% of the mothers breastfeed, some mothers initiate the practice late; others do not do it exclusively, and still others cut the duration to less than two years [4]. In the continent, late cessation of breastfeeding (CBF) has greater effects on child morbidity and mortality [5].The problem of malnutrition begins early in life during the first two years due to suboptimal breastfeeding [6]. A meta- analysis study showed that late CBF was associated with elevated risk of pneumonia [7].

The time to breastfeeding cessation varies from country to country. For instance, in America, Iran, and Italy, 60%, 57%, and 12% [810] of the mothers ceased breastfeeding before the children were two years of age, respectively. In China, the median breastfeeding duration was 6.0 months in urban groups and 8.0 months in rural groups [11], and it was 8.6 months in the United Arab Emirates [12]. In Pakistan more than half of the mothers (54%) ceased breastfeeding before the children were 6 months of age [13]. In Tanzania, 94.0% of the infants were breastfed till 12–15 months, but the proportion of breastfeeding decreased to 51.1% at 20–23 months of age [14].

Studies done in Lithuania and Norway showed that the time to CBF was associated with maternal factors, such as age, ethnicity, religion, and marital status [15, 16]. Studies done in Brazil, Nigeria, and Kuwait showed that the time to CBF was associated with child sex, place of delivery, maternal education, maternal employment, and family monthly income [1719]. In addition, health and health service related factors, maternal and child illness [15], multiple births, breastfeeding experience [5], HIV status of the mother [5, 20], mode of delivery [21], place and attendant of delivery, birth interval, and antenatal care [22] were also factors influencing the time to CBF. Similarly, the time to CBF was related to support from father [23], postpartum employment [17], mother’s attitude and knowledge about breastfeeding [18].

The Federal Ministry of Health of Ethiopia has developed a guideline on infant and young child feeding practices [6]. However, the duration of breastfeeding has decreased from time to time [24]. Therefore, this study aimed to assess the rate and predictors of the time to CBF, using survival analysis among mothers who had index children aged two to three years at Debre Markos, northwest Ethiopia.

Methods

Study design and period

A quantitative community-based retrospective follow-up study was conducted between March 2014 and March 2016 to assess the rate of CBF before two years and associated factors among mothers who had index children aged two to three years.

Study setting

Debre Markos town is located at 300 km northwest of Addis Ababa, the capital of Ethiopia. In Debre Markos, there are seven kebeles (the lowest local administrative units). The total population of the town is 101,582, (52,833 female and 48,749 are male). In the town, there are 23,956 women in the reproductive age group (15–49 years) and 2310 children two to three years of age [24]. In the town one referral hospital, three health centers, and two nongovernmental organization clinics provide health care services to the residents. 

Sample size, sampling technique, and procedures

For determining the sample size, a single population formula was used with an assumption of 95% confidence interval, marginal error of 5%,and 18% as the proportion of CBF before two years of age [24]. Adding 10% to account for a non-response rate and a design effect of 2 gave us the final sample of 500mother-childpairs.By taking the ratio of the total mother-child pairs of 1632 in five selected kebeles a total sample size of 500 was attained with a sample interval of three.

In the five selected kebeles, a total of 1632 (273,597,300,229 and 233 in each kebele) eligible mother-child pairs were found, out of which 500(84, 183, 92, 70 and 71) eligible participants were selected for each kebele, using the population proportion formula. Mother-child pairs were selected using the systematic random sampling technique with a sample interval of three eligible households. To get eligible mother-child pairs, we moved from block to block of each selected kebele and every household was visited until the required sample size was secured.

Data collection

Data were collected using an interviewer-administered structured questionnaire. The questions were drawn from the literature in the Ethiopian Demographic Health Survey, and we also used some literature on breastfeeding written in the Ethiopian context. The questionnaire comprised socio-demographic, health service, and obstetric related components.

The survival data were collected from mothers with index children aged two to three years. The mothers were asked the date on which they ceased breastfeeding, which was the event of interest. The date of birth of the index child was taken as the starting point of the retrospective follow-up study. The length of time was measured in months (from birth to 3 years of age) and was taken to be the survival time for those who had experienced the event of interest. A mother who ceased breastfeeding before two years was an event of interest, and those who were breastfed during data collection were considered as right censored.

Possible predictors of time to CBF, such as socio-demographic variables, like number of children, birth interval, mode of delivery, breastfeeding experience and place of delivery were studied. In addition to these, ANC follow up, attendant of delivery, breastfeeding counseling before and after delivery, HIV status of the mother, knowledge and attitude about breastfeeding were the other potential factors evaluated in terms of their association with the time to CBF.

Data quality control

In order to maintain the quality of data, the principal investigator trained the five data collectors and one supervisor for one day. A pretest was conducted on 20 mothers from a non-selected kebele. On-site supervision was performed and each copy of the questionnaire was checked for completeness and accuracy before data entry, and incomplete questions were excluded.

Definitions

Early cessation of breastfeeding

Mothers stoppages of breastfeeding before their children are two years of age.

Knowledge

Mothers’ awareness about the advantages and duration of breastfeeding.

Adequate knowledge

If a mother answered at least nine of the twelve knowledge assessment questions correctly.

Favorable attitude

If a mother responded positively to at least nine of the twelve attitude assessment questions.

Statistical analysis

Data were entered, coded and cleaned using Epi-info version7.0statistical software and were then exported to SPSS version 20 for further analysis. The Kaplan-Meier curve was used to measure the probability of surviving the breastfeeding duration.

Incidence rate was calculated as the number of events over the person-months of follow- up. Both bivariate and multivariate Cox proportional regression models were used to identify factors that affected the CBF before two years. Variables with P-value < 0.2 in the bivariate Cox regression model were entered spontaneously into the multivariate Cox regression model to measure the effect of each variable on the hazard function after adjusting the effects of other variables using the Backward LR method. Variables with P-value< 0.05 in the multivariate Cox regression analysis were considered as statistically significant for the CBF before two years.

Results

Socio-demographic, health, and health service-related characteristics

In the study, a total of 500 mother-child pairs were included. Of these, 483 (96.6%) were followed retrospectively. The mean age of the mothers was 28.59 (± 4.95) years, while that of the children was 30.11 (±4.15) months. In this study, the majority of the mothers were married; they were Amhara by ethnicity. Almost half of the mothers were housewives, and one-third completed secondary school [Table 1].
Table 1

Socio-demographic characteristics of mothers who have index children aged two to three years, northwest Ethiopia 2016 (n = 483)

Variables

Number

Percent

Age of mother

 15–19

4

0.8

 20–24

86

17.8

 25–29

199

41.2

 30–34

130

26.9

  ≥ 35

64

13.3

Marital status

 Married

426

88.2

 Divorced

13

2.7

 Widowed

44

9.1

Sex of index child

 Male

263

54.5

 Female

220

45.5

Family size

  ≤ 4

266

55.1

  > 4

217

44.9

Number of children

  ≤ 3

419

86.7

  > 3

64

13.3

Maternal education

 non educated or Informal education

91

18.8

 Primary education

93

19.3

 Secondary education

141

29.2

 Certificate, and above

158

32.7

Educational status of father

 Not educated or Informal education

88

18.2

 Primary education

70

14.5

 Secondary education

119

24.6

 Certificate and above

206

42.7

Maternal employment

 House wife

252

52.2

 Government

107

22.2

 Private

113

23.4

 Private organization

11

2.3

Family monthly income

  ≤ 29.5$

76

15.7

 29.6–63.6$

89

18.4

 63.7–106.8$

105

21.7

 106.9–161.4$

81

16.8

  ≥ 161.41$

132

27.3

More than half of the mothers (62%) had adequate knowledge, whereas half of them had favorable attitude towards breastfeeding in general, and the majority preferred breastfeeding to formula feeding [Table 2].
Table 2

Health and health service related characteristics of mothers who have index children aged two to three years at Debre Markos, northwest Ethiopia, 2016 (n = 483)

Characteristics

Number

Percent

Antenatal care

 Yes

455

94.2

 No

28

5.8

BF counseling during ANC

 Yes

336

69.6

 No

147

30.4

Place of delivery

 At home

53

11.0

 Government hospital

326

67.5

 Government health center

95

19.7

 Non government health facility

9

1.8

Mode of delivery

 Vaginal

441

91.3

 Cesarean section

42

8.7

Attendant of the delivery

 Health profession

435

90.1

 Relative/Friends

48

9.9

Breastfeeding counseling after delivery

 Yes

370

76.6

 No

113

23.4

Breastfeeding experience

 Yes

274

57.7

 No

209

43.3

Maternal HIV status

 Positive

28

5.8

 Negative

455

94.2

Knowledge about breastfeeding

 Adequate

297

61.5

 Inadequate

186

38.5

Attitude about breastfeeding

 Favorable

252

52.2

 Unfavorable

231

47.8

Survival analysis for breastfeeding cessation

The overall person-time of CBF was 11,181 person months. The overall incidence rate of CBF before 2 years of age was 13.70 per 1000 person-months (95% CI: 27.3–35.8). The cumulative survival probability in life table indicated that the percentage of children who remained on breastfeeding for the first two years was 68.5% [Fig. 1].
Fig. 1
Fig. 1

Survival of breastfeeding among mothers who have index children aged two to three years at Debre Markos, northwest Ethiopia, 2016

Multivariate survival analysis

In the bivariate Cox regression model, age, marital status, educational status, occupation of mother, place of delivery, HIV status of the mother, family monthly income, and number of children were independent predictors of CBF before two years of age(p < 0.2). In the multivariate Cox regression model, maternal education, maternal occupation, place of delivery, HIV status of the mother, family monthly income, and number of children were significantly associated with time to cessation of breastfeeding at 95% confidence level (p < 0.05). 

In this study, mothers who were government employees decreased the time of breastfeeding by 2.8 times compared to housewife mothers (AHR = 2.81, 95% CI: 1.80–4.38). HIV positive mothers deceased the time of breastfeeding almost by 3.4 times compared to HIV-negative mothers (AHR = 3.42, 95% CI: 1.96–5.94). Mothers with less than three children increased the time of breastfeeding by 57% compared to mothers who had more than three children (AHR = 0.43, 95% CI: 0.28–0.65). Mothers who had certificate and above educational qualification increased the time of breastfeeding almost by 55% compared to less educated mothers (AHR = 0.45, 95% CI: 0.24, 0.85) [Table 3].
Table 3

Bivariate and multivariate cox regression of CBF among mothers who have index children aged two to three years Debre Markos, northwest Ethiopia 2016 (n = 483)

Variables

Cessation of breastfeeding

Yes (%)

No (%)

CHR (95% CI)

AHR (95% CI)

Age of mother (in years)

 < =24

18 (20.0)

72 (80.0)

1

1

 25–29

61 (30.6)

138 (69.4)

1.59 (0.94,2.69)

1.27 (0.73,2.20)

 30–34

 ≥ 35

48 (36.9)

82 (63.1)

2.05 (1.19,3.53)

1.33 (0.72,2.43)

 

26 (40.6)

38 (59.4)

2.48(1.36,4.53)

1.34 (0.67,2.65)

Marital status

 Married

127 (29.8)

299 (70.2)

0.61 (0.38,1.00)

0.77 (0.43,1.37)

 Divorced

7 (53.8)

6 (46.20)

1.20 (0.51, 2.87)

0.44 (0.32,2.22)

 Widowed

19 (43.2)

25 (56.8)

1

1

Maternal education

 Non educated and Informal Education

32 (35.2)

59 (64.8)

1

1

 Primary education

24 (25.8)

69 (74.2)

0.66 (0.39,1.13)

0.72 (0.42,1.26)

 Secondary education

38 (26.95)

103 (73.1)

0.69 (0.44,1.12)

0.59 (0.34,1.03)

 Certificate and above

59 (37.3)

99 (62.7)

1.00 (0.65,1.54)

0.45 (0.24, 0.85) *

Educational status of father

 Non educated or Informal Education

30 (34.1)

58 (65.9)

1

1

 Primary education

16 (22.9)

54 (77.1)

0.65 (0.36,1.17)

1.04 (0.52, 2.07)

 Secondary education

30 (25.2)

89 (74.8)

0.65(0.39,1.08)

0.93 (0.49,1.77)

 Certificate and above

153 (54.3)

129 (45.7)

1.06 (0.69,1.61)

1.04 (0.53, 2.05)

Maternal employment

 House wife

64 (25.4)

188 (74.6)

1

1

 Government

58 (54.2)

49 (45.8)

2.46 (1.72,3.51)

2.81(1.80, 4.38) *

 Private organization

2 (18.2)

9 (81.2)

0.62 (0.15,2.53)

0.76 0.18, 3.13)

 Private(self) work

29 (25.7)

84 (74.3)

1.01 (0.65,1.57)

0.95 (0.61, 1.49)

Monthly family income

  ≤ 29.5$

33(43.4)

43 (56.6)

1

1

 29.6–63.6$

17 (19.1)

72 (80.9)

0.36 (0.20, 0.64)

0.29(0.16, 0.54) *

 63.7–106.8$

27 (25.7)

78 (74.3)

0.50 (0.30, 0.83)

0.40 (0.24, 0.68) *

 106.9–161.4$

17 (21.0)

64 (79.0)

0.38 (0.22, 0.69)

0.29 (0.16, 0.55) *

  ≥ 161.41$

59 (44.7)

73 (55.3)

0.97 (0.63,1.48)

0.48 (0.29, 0.81) *

Antenatal care (ANC)

 Yes

144 (31.6)

311 (68.4)

1

1

 No

9 (32.1)

19 (67.9)

1.08 (0.55, 2.11)

1.13 (0.53,2.38)

Family size

  ≤ 4

78 (29.3)

188 (70.7)

0.8 (0.58,1.10)

0.88 (0.58,1.34)

  > 4

75 (34.6)

142 (65.4)

1

1

Place of delivery

 At home

10 (18.9)

43 (81.1)

1

1

 Government hospital

110 (33.7)

216 (66.3)

1.93 (1.01,3.68)

2.30 (1.15, 4.62)*

 Health center, post

33 (31.7)

71 (68.3)

1.75 (0.86,3.55)

2.04 (0.96, 4.32)

Attendant of delivery

 Health professional

144 (33.1)

291 (66.9)

1

1

 Relative/friend

9 (18.75)

39 (81.25)

0.53 (0.27, 1.04)

1.08 (0.26, 4.38)

Mode of delivery

 Cesarean section

18 (42.8)

24 (57.2)

1.523 (0.931, 2.49)

1.3 (0.75, 2.24)

 Vaginal

135 (30.6)

306 (69.4)

1

1

BF counseling on ANC

 Yes

128 (34.6)

242 (65.4)

1.30 (0.90, 1.87)

1.29 (0.89, 1.87)

 No

25 (22.3)

87 (77.7)

1

1

Number of Children

  ≤ 3

124 (29.6)

295(70.4)

0.57(0.38, 0.86)

0.43 (0.28, 0.65) *

  > 3

29 (45.3)

35(54.7)

1

1

Maternal HIV status

 Positive

17 (60.7)

11 (39.3)

2.66 (1.61, 4.42)

3.42 (1.96, 5.94) *

 Negative

136 (29.9)

319 (70.1)

1

1

BF Experience

 Yes

83 (30.3)

191 (69.7)

1

1

 No

70 (33.5)

139 (66.5)

1.12 (0.82, 1.54)

1.31 (0.93, 1.85)

Attitude of mother

 Favorable

74 (29.4)

178 (70.6)

1

1

 Unfavorable

79 (34.2)

152 (65.8)

0.81 (0.59, 1.11)

0.81 (0.88, 1.71)

*Statistically significant at P value < 0.05, 1 BF Breastfeeding

CHR Crude hazard ratio, AHR Adjusted hazard ratio

"1" indicates statistically significant variables

Discussion

In this study, 483 mother-child pairs were followed retrospectively for a total of 11,181 person-months. The incidence rate of breastfeeding cessation before two years of age was 13.70 person-months. One-third of the mothers (32%) ceased breastfeeding before two years of age. This prevalence is higher than the national average [24], but lower than that of a study done in Iran (57%) [9].The variation may be due to the fact that the present study considered only urban residents, while the national study considered both urban and rural residents. But the difference between this and the Iranian study may be due to the socio-demographic variations between the two countries.

This study showed that HIV-positive mothers reduced the time of breastfeeding by 3.4 times compared to HIV-negative mothers. This result corresponds to that of a study done in South Africa [5]. The low breastfeeding duration of HIV-positive mothers might be due to the fear of HIV transmission to their children and mothers’ illness due to HIV/AIDS.

In this study, mothers who were better educated increased the time of breastfeeding compared to less educated mothers. This is in line with other findings in South Africa and Kuwait [5, 19] which showed that educational level of mothers influenced breastfeeding duration. The possible explanation might be when mothers are educated, the knowledge of breastfeeding duration and willingness to continue breastfeeding increases compared to non-educated mothers. But a study conducted in India showed that better-educated mothers reduced the time of breastfeeding than less educated ones [25]; this difference might be due to early introduction of supplementary feeding among more educated mothers leading to reduce the time of breastfeeding.

Mothers who had family monthly income of $29.6–63.6 increased the time of breastfeeding by 51% compared to mothers with lower family monthly income. However, a study done in Pakistan [22] showed that mothers who had lower family monthly income increased the time of breastfeeding more than owners of higher family monthly income. The possible reason for the direct relationship between income and breastfeeding duration might be that mothers who had higher family monthly income could have good knowledge about the advantages of breastfeeding.

In this study, mothers with less than four children increased the time of breastfeeding by 57% compared to mothers who had more than four children. This finding is similar with that of a study done in Bangladesh [21].The possible reason for this is that mothers a lower number of children have enough time to continue breastfeeding.

In our study, government employee mothers were more likely to reduce the time of breastfeeding compared to housewife mothers. This finding is in line with those of studies done in Greece and Australia [16, 26]. The explanation for this finding might be that in Ethiopia government employee mothers return to work within a short time (three months) after delivery. In addition to these reasons, in Ethiopia there are no breastfeeding rooms in working areas. This might be the cause of early termination of breastfeeding for government employee mothers.

In Ethiopia, 15% of the births are delivered at health facilities [24]. This study showed that about 89% of the births at Debre Markos town were delivered at health facilities. Mothers who delivered at health institutions decreased the time of breastfeeding compared to mothers who delivered at home, but a study done in India showed that those mothers who delivered at health facility increased the time of breastfeeding [25].The reason might be in India mothers can get better breastfeeding counseling in the health facilities.

Strengths and limitations

The strength of this study was that it assessed breastfeeding duration up to two years (most studies assessed for 1 year); this adds significant variables to the CBF and helps determine the rate of breastfeeding proportion (person months).

This study has potential limitations, like recall bias which may possibly result in under or over estimation of the actual breastfeeding durations. This bias was not fully controlled although interviewers were trained to minimize it by encouraging mothers to remember when they had their index children by relating their deliveries with the calendar for local events. Another limitation of this study was that the authors did not account for mothers who had breast pumps. In fact, as breast pumps are not common in Ethiopia.

Conclusion

The incidence rate of time to CBF before children were two years of age was 13.70 per 1000 person- months (95%CI 27.3–35.8). The mean duration of breastfeeding was longer than in most countries. Family monthly income, educational status of the mother, HIV status of the mother, place of delivery, number of children, and employment of mothers were significantly associated with the time to CBF before two years of age. Therefore, interventions such as family planning and educating HIV positive mothers about the options of breastfeeding are essential to increase breastfeeding duration.

Abbreviations

AHR: 

Adjusted Hazard Ratio

ANC: 

Antenatal Care

BF: 

Breast Feeding

CBF: 

Cessation of Breast Feeding

CHR: 

Crude Hazard Ratio

EDHS: 

Ethiopian Demographic and Health Survey

IYCF: 

Infant and Young Child Feeding

NGO: 

None Governmental Organizations

WHO: 

World Health Organization

Declarations

Acknowledgements

We would like to acknowledge the University of Gondar for the ethical clearance. The authors would like to thank the study participants, data collectors, and the supervisor.

Funding

The authors have declared that there was no funding.

Availability of data and materials

The data that support the findings of this study are available from https://github.com/melkamut/breastfeeding-one. Full data set and materials pertaining to this study can be obtained from corresponding author on reasonable request.

Authors’ contributions

MT made the draft proposal and acquisition and analysis of data, KA worked on the interpretation and discussion of results. BM involved in drafting and revising the manuscript. All authors read and approved the final manuscript.

Ethics approval and consent to participate

Ethical clearance was obtained from the Ethical Review Committee of the Institute of Public Health the University of Gondar (Ref: 2284/06/08). An official permission letter was obtained from Debre Markos town Health Office. Informed consent was obtained from study participants in their local language after explaining the purpose of the study, potential risks and benefits of partaking in the study, and the right to withdraw from the study at any time. The participants were also assured that the data was confidential. In this study we included only mothers having their children age 2 and above years, in this case there were no mothers having age less than 18 years in this study, therefore we took informed written parental consent.

Consent for publication

Not applicable. 

Competing interest

The authors declare that they have no competing interests.

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Authors’ Affiliations

(1)
Department of Human Nutrition, College of Medicine and Health Sciences, the University of Gondar, P.O. Box 196, Gondar, Ethiopia
(2)
Department of Epidemiology and Biostatistics, Institute of Public Health, College of Medicine and Health Sciences, The University of Gondar, Gondar, Ethiopia

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