Preterm Birth and Associated Factors Among Mother Who Gave Birth in Public Health Hospitals in Harar Town Eastern Ethiopia 2019

Zewde GT

Department of Midwifery, Harar Health Science College, Harar, Ethiopia

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Abstract

Background: Preterm birth is defined as a delivery which occurs at less than 37 weeks completed of gestation. The majority of preterm birth remains vulnerable to long term complications that may persist all over their lives. Globally, about 12.9 million births (9.6%) of all births worldwide were preterm and of these more than 60% of preterm births occur in Africa and South Asia while about 0.5 million were in each of Europe and North America. There is limited evidence on magnitude of preterm birth and associated factors, among women attending delivery service at public hospitals of low income countries like Ethiopia including the study setting, Harar town.

Objective: To assess magnitude of Preterm Birth and Associated Factors among Mother Who Gave Birth in Public Health Hospitals in Harar Town Eastern Ethiopia, 2019.

Methods and Material: Institutional based cross-sectional study was conducted on 325 women attending delivery service in Harar public hospitals. Structured questionnaires were used to collect data; systematic sampling technique also used to select participants. A total of three data collectors and one supervisor were participated on the study. The data was entered to SPSS version 22.0 for analysis. Pretest, double data entry and local language translation are used to assure data quality .The descriptive and logistic analysis was employed. To measure the strength of association between dependent and independent variables, Crude and Adjusted Odd Ratios with 95% Confidence interval was calculated. Finally, the variable which shows p-value < 0.05 considered as statistically significance.

Result: The study show that the magnitude of preterm birth was 24.9% (95%CI 21.0, 29.8).Women who didn’t attend ANC (AOR=1.5, 95% CI: 0.7, 2.3), history of ante partum hemorrhage (AOR=1.3, 95% CI: 0.2, 2.7), hemoglobin less than eleven (AOR=1.4, 95% CI: 0.2, 2.2) and  birth interval less than 24 months (AOR=1.3, 95% CI: 0.4, 2.3) and history of chronic disease (AOR=1.3, 95% CI: 0.4, 2.3) were significantly associated with outcome variable.

Conclusion and Recommendation: The prevalence of preterm birth in Harar town public health hospitals is slightly higher than studies done in different parts of Ethiopia. Not attending ANC, short inter pregnancy interval (<24 months), previous history of APH, Presence of chronic medical illness and low hemoglobin level (<11g/dl) were found to be statistically significant with the occurrence of preterm birth in current pregnancy therefore effort need to improve on it

Key words

Laboring Mother; Preterm Birth; Public Hospital, Harar Town

Introduction

Background

Preterm birth is defined by WHO as all viable births before 37 completed weeks of gestation or fewer than 259 days since the first day of woman’s last menstrual period [1]. It is classified as extremely preterm < 28 weeks, very preterm 28 to <32 weeks, and moderate preterm 32 to < 37 weeks can also be spontaneous or provider initiated (induced) [2].

Globally, about 12.9 million births (9.6%) of all births worldwide were preterm and of these more than 60% of preterm births occur in Africa and South Asia while about 0.5 million were in each of Europe and North America and 0.9 million in Latin America and the Caribbean [3].

The rate of preterm birth is escalating globally and ranges from 5 to 7% in developed countries and significantly higher in least developed countries [4]. Prematurity is one of the leading causes of neonatal deaths in Africa (11.9%) and is a major public health problem and it is responsible for 27% of all early neonatal admission [5]. According to the report from “white paper on preterm birth” in 2011, of all 4 million annual early neonatal deaths 28% are due to preterm birth [6]. Preterm birth has many long and short term consequences like cerebral palsy, mental retardation, visual and hearing impairments, behavior and social-emotional concerns, learning difficulties, and poor health and growth, neurosensory deficits (blindness, deafness), intra ventricular hemorrhage, necrotizing enter colitis, and delay in physical and mental development [8, 9]. The major risk factor of preterm delivery was absence or inadequate prenatal care, low monthly income, no contraceptive use, cesarean delivery, and clinical complications during pregnancy [7]. There is limited information on magnitude of preterm birth and associated factor among women attending delivery service at public hospitals of Harar Town therefore this study aimed to contribute in identifying magnitude and factors associated with preterm birth

Significance of the Study

The result of this study provides valuable information on magnitude of preterm birth and associated factors. Determining factors has a great role in guiding health professionals and health policy makers to design the intervention strategy and applying necessary preventive and appropriate measures to decrease preterm birth and new born mortality and morbidity. In addition, it will help to fill the research gaps in the study area and serve as base line information for other researcher.

Objective

General objective

  • To assess magnitude of Preterm Birth and Associated Factors among Mother Who Gave Birth in Public Health Hospitals in Harar Town Eastern Ethiopia 2019.

Specific Objective

  • To assess magnitude of Preterm Birth among Mother Who Gave Birth in Public Health Hospitals from April 11 to May 17, 2019
  • To identify factors associated with  Preterm Birth among Mother Who Gave Birth in Public Health Hospitals April 11 to May 17, 2019

Methodology

Study Area and Study Period

Institutional based cross sectional study was conducted among mother who gave birth in Harar Town public health institution. Harar is located in the eastern part of Ethiopia 525 Km away from Addis Ababa, the capital city of Ethiopia. In the region, 27 health posts, 8 health centers and 2 Public, 2 Private, 1 Federal Police, 1 Fistula Hospitals, 18 Private for profit clinics, 25 pharmaceutical retails out let, 3 pharmaceutical whole sellers and 2 modern laboratories are available. The study was conducted in 2 public hospital namely Jugel and Hiwot Fan Specialized university hospital from April 11 to May 17, 2019

Study Design

Quantitative Institutional based cross sectional study was utilized.

Source and Study Population

The source of population was mothers who gave birth in Harar town public hospitals and the study population were randomly selected mother who gave birth during the study period

Inclusion and Exclusion Criteria

Women who gave births during the study period with known LNMP or had ultrasound check up result during pregnancy were include on this study while. A woman who doesn’t have consent, Women who are unable to communicate was excluded.

Sample Size Determination

Sample size was determined by using single population proportion formula (Proportion of preterm birth from study conducted in Jimma were 25.9% [10] Calculated sample size = 295 by adding 10 % non-response rate the final Sample was: =325 and double population proportion formula (P1=23.46 % and P2= 9.64%, 95%, margin of error of 5 % and power of 80%, and using Open Epi Info 7) [11] Calculated sample size = 254 by adding 10 % non-response rate the final Sample was: =279 then comparing the first and second objective, the final sample size was 325.

Sampling Procedure

Two governmental public hospital were include sample was proportionally allocated based on their patient flow. Average monthly patient flows in two hospitals were 402 and 180 at HFSUH and Jegula Hospital. Sampling frame was developed from delivery registration book and subjects were selected by using systematic random sampling method. Finally a total of 325 participants were selected based on their allocation until desired sample size was meeting.

Figure 1: Schematic Description of Sampling Procedure of Research Conduct on Magnitude of Preterm Birth and Associated Factors among Pregnant Women Attending Delivery Service in Public Hospitals of Harar Town 2019

Variables of the Study

Dependent variables

Preterm Birth

Independent variable

Socio-Demographic Factors: maternal age, maternal educational status, residence, maternal occupational status.

Health Care Service Utilization Related Factors: ANC follow up status, number of ANC visits.

Obstetric Related Factors: Parity, inter pregnancy interval, onset of labor, and history of preterm birth, pregnancy outcome, PIH, APH and PROM.

Medical Related Factors: Maternal HIV status, malaria during pregnancy, anemia (hemoglobin level) during pregnancy, chronic illnesses (like cardiac, DM, asthma and hypertension).

Data Collection Tools and Procedure

The interviewer administered questionnaire was adopted after reviewing relevant scientific literatures. The tool were translated into local language Afan Oromo and translated back to English language to check its consistency, questionnaire contains socio demographic, obstetrics, health care service utilization and medical related factors. Data were collected by three diplomas and one BSc Midwives.

Data Quality Control

To assure the quality of the data, properly design data collection instrument was developed and pretest was conducted. Training was given for data collectors and supervisors for three days on the instruments, method of data collection, ethical issues and purpose of the study. Completeness and correctness of data was checked on daily based.

Data Processing and Analysis

Data entry was done by using Epi-info 3.1 and transferred to SPSS version 21 for analysis. The univariate analysis such as proportions, percentages frequency distributions and appropriate graphic presentations as well as measures of central tendency and measures of dispersion were made. Inferential statistics were used to establish associations between prematurity and the various risk factors using a chi-square analysis. Multivariate logistic regression was used to determine the factors independently associated with preterm birth. In binary logistic regression analysis with p ≤ 0.25 were transferred to multivariate logistic regression analysis. In multivariable logistic regression analysis, the variables with P-value ≤ 0.05 were considered as significantly associated variable with preterm birth.

Ethical Clearance

Ethical clearance letter was obtained from Harar health Science College Ethical Review Committee. Permission was obtained from study institution. All the participants were informed the purpose, advantages and disadvantages, there have the right to be involved or not. Consent was obtained from each respondent prior to data collection; Confidentiality was maintained by avoiding names and other personal identification.

Operational Definitions

Preterm Birth: Refers to the birth of baby that occurs before 37 completed weeks of gestation [2].

Term Birth: Refers to the birth of baby that occurs after 37 completed weeks of gestation [2].

Last Menstrual Period: The date of the starting of last menstruation the women had to the index pregnancy [12].

Results

Socio-Demographic Characteristics

A total of 325 mothers were included on the study which makes the response rate 100 %. The mean age of the study participants was 27.02 with ±5.73 SD. Majority, 200(61.5%) of the study participants were between 20 and 30 years old. Regarding ethnicity majority 161 (49.5%) of the respondent are Oromo 158(48.6%) and Muslim religion flowers. (Table 1)

Table 1. Socio Demographic Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, 2019

Variable

Category

Frequency

Percentage

Age

< 20years

21-30 years

31- 40 years

19

200

106

5.8

61.5

32.7

Residency

Urban

Rural

146

179

44.9

55.1

Religion

Muslim

Orthodox

Protestant

158

107

60

48.6

32.6

18.5

Ethnicity

Oromo

Amhara

Harari

Tigray

Somali

161

106

35

15

8

49.5

32.6

10.8

4.6

2.5

Education of Mother

Can’t read and write

Can read and write

Primary level

Secondary and above

101

110

90

25

31.7

33.8

27.7

0.8

Occupation of Mother

Government

Private

Merchant

128

115

82

39.4

35.4

25.2

Obstetric related Characteristics

Majority of the respondent 227 (69.8%) were multigravida women. Regarding birth interval 164 (72.2%) women had less than two years birth interval. Spontaneous vaginal delivery accounts the highest 240 (73.8%) mode of delivery. Nearly one third 99 (30.5%) of women had history of abortion. while more than half 180 (55.4%) of the pregnancy were planned. Majority women282 (86.8%) labour had start spontaneously and they had no 250 (76.9%) history of Liquid drainage before labor.

Table 2. Obstetrics Related Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, 2019

Variable

Category

Frequency

Percentage

Ever give birth

Yes

227

69.8

No

98

30.2

     

Inter birth interval

≤ 2 years

164

72.2

     

3-5 years

56

24.7

> 5 years

7

3.1

     

Current mode of delivery

SVD

240

73.8

C/S

70

21.5

Instrumental

15

4.7

Pregnancy outcome

Single tone

243

74.8

Multiple

82

25.2

History of preterm

Yes

85

26.8

No

240

73.8

History of abortion

Yes

99

30.5

No

226

69.5

Pregnancy type

Planned

180

55.4

Unplanned

145

44.6

Labor onset

Spontaneous

282

86.8

Induced

43

13.2

Liquid drainage before labor

Yes

75

23.1

No

250

76.9

History of PIH

Yes

75

23.1

No

250

76.9

History of APH

Yes

84

25.4

No

241

74.2

Any injury during current pregnancy

Yes

50

15.4

No

275

84.6

Magnitude of Preterm Birth

The prevalence of preterm birth in this study was 12.8% [95% CI (21.0%, 29.8. %)].

Health Care Service Related Characteristics

Out of 325 mothers, 240 (73.8%) had ANC follow up for their recent pregnancy whereas about 85(26.2%) of them had no ANC follow up. Among those mothers who had ANC follow 22 (6.8%) of them had at least one visit while 180 (55.4%) had 2times visited and 38 (11.7%) of women had having ANC Visit 3 and above.

Medical Related Characteristic of Women’s

Among 325 women tested for Anemia one third 98(30.2%) was anemic whose Hgb concentration was below 11 g/dl. Majority 312 (96.4%) of the participant had tested for HIV among those tested 22 (7%) had Positive result while the rest 290(93%) had Negative.

Figure 2: Medical Related Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, April 11 To May 17

Factors Associated with Preterm Birth

In multivariable logistic regression analysis: women who do not attending  ANC follow up ,maternal, hemoglobin level, history of chronic disease and History of APH were statistically significant Women who didn’t attend ANC were 1.5 times (AOR=1.5, 95% CI: 0.7, 2.3), those who had history of ante partum hemorrhage were 1.3 times (AOR=1.3, 95% CI: 0.2, 2.7) and women whose hemoglobin were less than eleven were 1.4 times (AOR=1.4, 95% CI: 0.2, 2.2) more likely to give preterm birth than counters.(Table 3)

Table 3. Factors Associated With Preterm Births among Mothers Who Gave Birth in Harar Town Public Hospitals, Eastern Ethiopia, April 11 to May 17

 

Variable

Preterm Birth

COR  (95% CI)

AOR  (95% CI)

Yes

No

Residence

Urban

Rural

 

34 (23.3%)

47 (26.3%)

 

112 (76.7%)

132 (73.7%)

 

1

1.17 (0.7, 1.94)*

 

1

1.2 (0.3, 1.6)

History  of preterm

Yes

No

 

36 (42.4%)

45 (18.8%)

 

49 (57.6%)

195 (81.2%)

 

3.1 (1.8, 5.3)*

1

 

2.6 (1.3, 5.2)

1

Pregnancy type

Planned

Unplanned

 

42 (23.3%)

39 (16.9%)

 

138 (76.7%)

106 (73.1%)

 

1

1.2 (0.7, 2.0)*

 

1

1.6 (0.4, 2.5)

Do you attend ANC

Yes

No

 

60 (25%)

21 (24.7%)

 

180 (75%)

64 (75.3%)

 

1

1.3 (0.5, 1.8)*

 

1

1.5 (0.7, 2.3)*

Inter birth interval

<24 Months

≥ 24 Months

 

55 (24.3%)

26 (26.3%)

 

171 (75.7%)

121 (73.7%)

 

1.2 (0.6, 1.90)*

1

 

1.3 (0.4, 2.0)*

1

History of Abortion

Yes

No

 

29 (29.3%)

52 (23%)

 

70 (70.7%)

174 (77%)

 

0.72 (0.42, 1.22)*

1

 

0.5 (0.2, 1.2)

1

History  of APH

Yes

No 

 

56 (66.7%)

25 (10.4%)

 

28 (33.3%)

216 (89.6%)

 

1.5 (0.8, 2.3)*

1

 

1.3 (0.4, 2.7)*

1

History of PIH

Yes

No

 

20 (26.7%)

61 (24.4%)

 

55 (73.3%)

189 (75.6%)

 

0.8 (0.5, 1.6)*

1

 

0.7 (0.3, 1.2)

1

Onset of labor

Spontaneous

Induced 

 

69 (24.5%)

12 (27.9%)

 

213 (75.5%)

31 (72.1%)

 

1

1.2 (0.5, 2.45)*

 

1

1.3 (0.3, 2.8)

Hemoglobin level

<11g/dl

≥11 g/dl

 

26 (26.5%)

55 (24.2%)           

 

72 (73.5%)

172 (75.8%)

 

1.1 (0.6, 1.94)*

1

 

1.4 (0.3, 2.2)**

1

Hx of chronic disease

Yes

No

 

27 (25.7%)

54 (24.5%)

 

78 (74.3%)

166 (75.5%)

 

1.9 (0.6, 2.4)*

1

 

1.3 (0.4, 2.3)**

1

Hx of malaria attack

Yes

No

 

9 (25%)

72 (24.9%)

 

27 (27%)

217 (75.1%)

 

0.9 (0.4, 2.2)*

1

 

1.2 (0.7, 2.2)

1

P-value ≤0.05 is said to be statistically significant

Discussion

The prevalence of preterm births in this study was found to be 24.9% (95%CI 21.0, 29.8).These finding is consistent with study conducted in Brazil 21.7% [13], Nigeria 24% [14] and Jimma 25.9%[13].The finding on this study was higher than the cross sectional study conducted in India 15% [15]Kenya 18.6%[16].Gondar town 4.4% [17], Debremarkos11.6% [11], Bahir dar 11.7%[18] and Tigray 13.3% [19].This discrepancy might be due to difference in, sample size, study area, sample size, study population and intervention done toward pregnant mother  as well as socio demographic characteristics.

Mothers who had history of Ante partum during current pregnancy were 1.3 times more likely to have preterm birth compared to counterpart. These are consistent with study conducted in Tehran [20], Kenya [16] and Debremarkos [11]. These might be due consequence of anemia following bleeding predispose to hypoxia and preterm to the new womb.

In these study mothers who had no ANC follow up were 1.5 times more likely to deliver preterm birth than counterpart .These in lined with study conducted in Cameroon [21] and Debremarkos [22]. The association might be due to Antenatal visits of the pregnant mothers are very important as they provide chances for monitoring the fetal wellbeing and allow timely intervention for feto-maternal protection. This may be described to the routine provisions of nutritional and medical advice or care and supplementations offered during ANC visits.

Mothers who had inter birth interval at less than 24 months were 1.3 times more likely to have preterm births compared to mothers who had inter pregnancy interval greater than or equals to 24 months. These are similar with study done in Kenya [16] and Debre markos [11]. These might be due to existence of unidentified risk factors which precipitating preterm births in mothers with short inter pregnancy interval as well as it may be maternal related problems such as in ability to take care for close birth interval which might be due to socio economic status.

Women who had history of chronic disease were 1.3 times more likely to deliver preterm birth than counterparts. These in lined with study conducted in Malawi [23] and Debremarkos [11]. These might be due to maternal chronic illnesses may alter or limit the placental delivery of oxygen and nutrients to the developing fetus, possibly resulting in fetal growth restriction. In addition, they can increase the risk of preeclampsia and, thus, increases the risk preterm birth. Therefore, acute maternal medical conditions might lead to preterm birth.

Finally women whose hemoglobin level is less than 11g/dl were 1.4 times more likely to deliver preterm birth than counter parts. These in lined with study conducted in Malawi [23] and Debremarkos [11]. These might be due to fact effect of anemia on the oxygen bearing capacity and its transportation tendency to the placental site for the fetus.

Conclusion and Recommendation

Conclusion

The prevalence of preterm birth in Harar town public health hospitals is slightly higher than studies done in different parts of Ethiopia and still a major public health problem in the area. Not attending ANC, short inter pregnancy interval (<24 months), previous history of APH, Presence of chronic medical illness and low hemoglobin level (<11g/dl) were found to be statistically significant with the occurrence of preterm birth in current pregnancy.

Recommendation

For Obstetric Care Providers

  • Timely recognition of factor predisposes to ante partum hemorrhage and managing it promptly
  • Encourage mother to have Antenatal follow up and strengthening Antenatal care service
  • Encourage contraceptive usage and birth intervals
  • Health promotion and diseases prevention strategy should be strengthened
  • Iron provision for pregnant women should be strengthened
  • Identification and timely referral for specialized obstetrical evaluation and management of these who have high risk of preterm birth mothers in early pregnancy.

For Health Institutions

  • It is better to regularly screen out pregnant mothers for chronic medical illnesses, inter pregnancy interval, ANC follow up, and pregnancy related complication such as APH as that they will be alarmed as this can put in risk of preterm birth and unfavorable neonatal outcome which can end with death.
  • It is better to expand the neonatal intensive care unit and equipped with the necessary materials and trained staffs to management and prevent of the complications and consequences of preterm birth why still this is a major public health problem.

Strength and Limitations of the Study

Strength

  • Achieving high response rate and participating
  • As it was the first study for the area it serve as a base line data

Limitation

  • Recall bias in remembering the exact day of last normal menstrual period
  • Since the study design was cross sectional, it doesn’t show temporal relationship between the cause and effect as well as didn’t incorporate the consequence and outcome of preterm babies.

References

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Editorial Information

Article Type

Research Article

Publication history

Received date: March 10, 2020
Accepted date: March 24, 2020
Published date: April 02, 2020

Copyright

©2020 Zewde GT. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation

Zewde GT (2020) (2020) Preterm Birth and Associated Factors Among Mother Who Gave Birth in Public Health Hospitals in Harar Town Eastern Ethiopia 2019. OSP J Health Car Med 1. HCM-1-103

Corresponding author

Gosaye Teklehaymanot Zewde

Department of Midwifery, Harar Health Science College, Harar, Ethiopia. zewdegosa@yahoo.com

Figure 1: Schematic Description of Sampling Procedure of Research Conduct on Magnitude of Preterm Birth and Associated Factors among Pregnant Women Attending Delivery Service in Public Hospitals of Harar Town 2019

Figure 2: Medical Related Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, April 11 To May 17

Table 1. Socio Demographic Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, 2019

Variable

Category

Frequency

Percentage

Age

< 20years

21-30 years

31- 40 years

19

200

106

5.8

61.5

32.7

Residency

Urban

Rural

146

179

44.9

55.1

Religion

Muslim

Orthodox

Protestant

158

107

60

48.6

32.6

18.5

Ethnicity

Oromo

Amhara

Harari

Tigray

Somali

161

106

35

15

8

49.5

32.6

10.8

4.6

2.5

Education of Mother

Can’t read and write

Can read and write

Primary level

Secondary and above

101

110

90

25

31.7

33.8

27.7

0.8

Occupation of Mother

Government

Private

Merchant

128

115

82

39.4

35.4

25.2

Table 2. Obstetrics Related Characteristics of Women Who Give Birth in Public Hospitals in Harar Town, Eastern Ethiopia, 2019

Variable

Category

Frequency

Percentage

Ever give birth

Yes

227

69.8

No

98

30.2

     

Inter birth interval

≤ 2 years

164

72.2

     

3-5 years

56

24.7

> 5 years

7

3.1

     

Current mode of delivery

SVD

240

73.8

C/S

70

21.5

Instrumental

15

4.7

Pregnancy outcome

Single tone

243

74.8

Multiple

82

25.2

History of preterm

Yes

85

26.8

No

240

73.8

History of abortion

Yes

99

30.5

No

226

69.5

Pregnancy type

Planned

180

55.4

Unplanned

145

44.6

Labor onset

Spontaneous

282

86.8

Induced

43

13.2

Liquid drainage before labor

Yes

75

23.1

No

250

76.9

History of PIH

Yes

75

23.1

No

250

76.9

History of APH

Yes

84

25.4

No

241

74.2

Any injury during current pregnancy

Yes

50

15.4

No

275

84.6

Table 3. Factors Associated With Preterm Births among Mothers Who Gave Birth in Harar Town Public Hospitals, Eastern Ethiopia, April 11 to May 17

 

Variable

Preterm Birth

COR  (95% CI)

AOR  (95% CI)

Yes

No

Residence

Urban

Rural

 

34 (23.3%)

47 (26.3%)

 

112 (76.7%)

132 (73.7%)

 

1

1.17 (0.7, 1.94)*

 

1

1.2 (0.3, 1.6)

History  of preterm

Yes

No

 

36 (42.4%)

45 (18.8%)

 

49 (57.6%)

195 (81.2%)

 

3.1 (1.8, 5.3)*

1

 

2.6 (1.3, 5.2)

1

Pregnancy type

Planned

Unplanned

 

42 (23.3%)

39 (16.9%)

 

138 (76.7%)

106 (73.1%)

 

1

1.2 (0.7, 2.0)*

 

1

1.6 (0.4, 2.5)

Do you attend ANC

Yes

No

 

60 (25%)

21 (24.7%)

 

180 (75%)

64 (75.3%)

 

1

1.3 (0.5, 1.8)*

 

1

1.5 (0.7, 2.3)*

Inter birth interval

<24 Months

≥ 24 Months

 

55 (24.3%)

26 (26.3%)

 

171 (75.7%)

121 (73.7%)

 

1.2 (0.6, 1.90)*

1

 

1.3 (0.4, 2.0)*

1

History of Abortion

Yes

No

 

29 (29.3%)

52 (23%)

 

70 (70.7%)

174 (77%)

 

0.72 (0.42, 1.22)*

1

 

0.5 (0.2, 1.2)

1

History  of APH

Yes

No 

 

56 (66.7%)

25 (10.4%)

 

28 (33.3%)

216 (89.6%)

 

1.5 (0.8, 2.3)*

1

 

1.3 (0.4, 2.7)*

1

History of PIH

Yes

No

 

20 (26.7%)

61 (24.4%)

 

55 (73.3%)

189 (75.6%)

 

0.8 (0.5, 1.6)*

1

 

0.7 (0.3, 1.2)

1

Onset of labor

Spontaneous

Induced 

 

69 (24.5%)

12 (27.9%)

 

213 (75.5%)

31 (72.1%)

 

1

1.2 (0.5, 2.45)*

 

1

1.3 (0.3, 2.8)

Hemoglobin level

<11g/dl

≥11 g/dl

 

26 (26.5%)

55 (24.2%)           

 

72 (73.5%)

172 (75.8%)

 

1.1 (0.6, 1.94)*

1

 

1.4 (0.3, 2.2)**

1

Hx of chronic disease

Yes

No

 

27 (25.7%)

54 (24.5%)

 

78 (74.3%)

166 (75.5%)

 

1.9 (0.6, 2.4)*

1

 

1.3 (0.4, 2.3)**

1

Hx of malaria attack

Yes

No

 

9 (25%)

72 (24.9%)

 

27 (27%)

217 (75.1%)

 

0.9 (0.4, 2.2)*

1

 

1.2 (0.7, 2.2)

1

P-value ≤0.05 is said to be statistically significant