After adding 10% for the likelihood of non-response (with a calculated non-respondent rate is 42). Then the final sample size was 423 + 42 = 465 participants. Systematic random sampling technique was used to select samples after proportionally allocating for three Comprehensive Specialized hospitals. (Fig. 1)
4.7 Variables
4.7.1 Dependent variable
Maternal Depression yes/no
4.7.2 Independent variables
Socio-demographic factors
Age, residence, marital status, level of education, occupation and family size assessed by a structured questionnaire.
Clinical factors for mothers
history of chronic medical illness, family history of mental illness.
Substance use factors: current substance use: (Alcohol, Khat)
Children-related factors
age of children, sex of children, children's medical illness, weight of children, height of children.
Obstetric factors
Pregnancy complication or illness, unplanned pregnancy, Mode of delivery, Stressful life event during pregnancy, undesired fetal sex, history of abortion.
Psychosocial factors
Social support (Husband support, Domestic violence (intimate partner violence), unsatisfactory relationship with Mother-in-law, unsatisfactory relationship with husband), Perceived Stigma.
Child-related factors (age of children, children's medical illness and undernutrition (low height, low weight).
4.8. Data collection instrument and procedure
Data was collected by reviewing the patient chart as well as using an interviewer-administered questionnaire, which was adapted to the local contexts employed as a tool for this study.
Socio-demographic characteristics like residence, age at the time of interview, marital status, ethnicity, religion, education, occupational status.
Maternal depression
Patient Health Questionnaire-9 (PHQ-9) was used to measure maternal depression. (PHQ-9) is a screening tool created in 2001 by Dr Robert Land and his colleagues at Columbia University in the United States to screen adult patients for the presence and severity of depression in a primary care setting (32). The PHQ-9 is a self-rated depression scale with nine items that asks about the past two weeks with response options ranging from “not at all” to “nearly every day.” The items reflect the nine criteria on which the diagnosis of DSM-5 major depressive disorder is based(32). The PHQ-9 score ranges from 0 to 27. Each of the 9 items scored from 0 (not at all) to 3 (nearly every day) (32). PHQ-9 is used to grade depressive symptom severity as none (score of 0–4), mild (5–9), moderate (10–14), Moderately severe depression 15–19 and Severe depression 20–27 as recommended by the scale developers(32). PHQ-9 has validity and usefulness in East Africa, which is widely used in Kenya for screening maternal depression(33) and in rural settings in Ghana for screening postpartum depression(34). The PHQ-9 items showed good internal consistency (Cronbach's alpha = 0.85)(35).
PHQ-9 is validated in Ethiopia, in urban and rural areas with a cut-off point ≥ 10 in urban and ≥ 5 in rural settings respectively and in urban settings with specificity and sensitivity of 67% and 86%, respectively for rural settings sensitivity is 83.5% and specificity is 74.7% (35, 36).
Social support
was measured using the Oslo Social Support Scale (OSSS-3)(37). The Oslo 3 Social Support Scale is a quick and affordable tool for determining the extent of social support. Without considerably increasing the workload for researchers or participants, it can be incorporated into bigger research initiatives like population-based studies. Oslo-3, which consists of 3 questions on one's family, friends, and neighborhood. The Oslo-3 scale consists of three items, the sum of which ranges from 3 to 14 (38). The Oslo 3-item social support scale (OSSS-3), is poor social support (a score of 3–8), intermediate social support (a score of 9–11), and strong social support (a score of 12–14). In African countries, it is validated in Nigeria among the population of clinical students and in general adult depression. Oslo-3 commonly used to assess level of social support in different Ethiopian studies, in particular with related psychiatric conditions. The internal consistency of the Oslo-3 of tools (Cronbach’s alpha = 0.91) in Nigeria(39).
Perceived stigma
was assessed by a three-item stigma scale. In the European population, a simple three-question tool for determining the extent of patients' perceived stigma has been developed and validated (40).In African countries three-item stigma scale which is validated in Zambia for epilepsy patients and comprised of dichotomous questions in which a positive response is indicative of perceived stigma with an overall possible score ranging from 0 (no perceived stigma) to 3 (maximally perceived stigma)(41).
Intimate partner violence
An intimate partner is defined as a present or former partner, husband, boyfriend, or ex-partner. Regardless of the legality of the relationship with the current or past intimate partner, women were deemed to have suffered intimate partner violence (IPV) if they answered "yes" to any one of the ranges of sexual, psychological, and physical coercive acts or any combination of the three(42).
Clinical factors of mothers: was assessed by structured questioners: family history of mental illness, and history of medical illness.
Child-related factors (age of children, children's medical illness) and undernutrition
Anthropometric measurement:
Children’s ages were recorded, and mid-upper arm circumference (MUAC, weight and height were taken following standard anthropometric procedures(43).
Undernutrition in the present study was characterized by the following indexes: stunted, underweight, and wasted. For children who were newly admitted, standard anthropometric procedures were used to measure their weight, height, and mid-upper arm circumference (MUAC), whereas for those who had been hospitalized for a long time and had established nutritional support, the data was retrieved from medical charts. The age of the child was determined from the mother's report. Anthropometric measures were converted into height for age, weight for height and weight for age. Finally, cases were considered if their Z scores were below minus three standard deviations (− 3SD) and a MUAC less than 115 mm according to WHO growth standard measurements (44).
Using standard cut-off points, operational definitions of malnutrition in all its manifestations are as follows: Children who had WAZ, HAZ and WHZ Z-scores are more than or equal to minus two standard deviations (≥ -2SD) were classified as normal underweight, stunted and wasted respectively. Children who had WAZ, HAZ and WHZ Z scores below − 2SD were classified as mild underweight, stunted and wasted respectively and Those with WAZ, HAZ and WHZ Z- scores below − 3SD were classified as moderate/severe underweight, stunted and wasted respectively(45, 46).
Obstetric factors
like unplanned pregnancy, mode of delivery, history of abortion, birth complication, child hospitalization, desired sex of the child, and child death were assessed by structured questioners.
Substance-related factors
like current use, and every use of substance.
Current substance use
according to alcohol, smoking, and substance involvement screening test (ASSIST) using at least one of a specific substance (Alcohol, Khat) for nonmedical purposes within the last 3 months (47).
Ever use of substance
according to alcohol, smoking, and substance involvement screening test (ASSIST) using at least one of any specific substance (Alcohol, Khat ) for the nonmedical purpose at least once in a lifetime(47).
4.9 Operational definitions
Maternal Depression
Those who were found to score ≥ 10 from PHQ-9 were considered as having depression (32).
Social support- using the OSLO scale categorized into poor ‘3–8’, moderate “9–11”, and strong “12–14”.
Perceived stigma
Perceived stigma was assessed by a three-item stigma scale with an overall possible score ranging from 0 (no felt stigma) to 3 (maximally felt stigma) (41).
Intimate partner violence
The current or past intimate partner, women were deemed to have suffered intimate partner violence (IPV) if they answered "yes" to any one of the ranges of sexual, psychological, and physical coercive acts or any combination of the three(42).
Child anthropometry
Children were classified as under-nutrition if their weight-for-age, height-for-age and weight-for-height Z- scores, fell below − 3SD the median WHO growth criteria (Z score), and if their MUAC was less than 115 mm. Those with WAZ, HAZ and WHZ Z- scores below − 3SD were classified as underweight, stunted and wasted respectively(45, 46).
Ever use of substance
refers to the use of at least one of any specific substance for a non-medical purpose at least once in a lifetime (alcohol, khat).
Current substance use denotes using at least one of any specific substance for non-medical purposes within the last 3 months (alcohol, khat).
Chronic medical illness: refers to previous experiences of any physical illness whose information was collected using the following question: “Have you ever been faced with any known chronic medical illness? “ If their response was yes, it was being considered as having a chronic medical illness.
Family history of mental illness: the previous history of mothers ‘mental health problems. The information was based on a guiding question “Do you have family members who have ever known mental illness and answers?” If their response was “yes”, the respondent was considered as having a family history of mental illness.