Table 6 Perceived insufficient milk supply and associated factors, multivariable logistic regression analysis

Maternal age, year

0.322

0.457

25–34 vs. <25

1.46

0.86, 2.49

0.164

1.38

0.81, 2.37

0.237

≥ 35 vs. <25

1.20

0.59, 2.44

0.614

1.20

0.58, 2.47

0.620

Maternal education

0.339

0.310

High school vs. middle and below

1.43

0.89, 2.32

0.143

1.46

0.90, 2.37

0.130

University and above vs. middle and below

1.29

0.75, 2.22

0.355

1.36

0.77, 2.38

0.292

Number of children

0.184

0.231

2 vs. 1

1.52

0.97, 2.36

0.066

1.40

0.91, 2.17

0.131

≥3 vs. 1

1.30

0.76, 2.24

0.343

1.50

0.86, 2.59

0.152

Age, months

0.434

0.421

6, 11 vs. <6

1.32

0.83, 2.08

0.237

1.29

0.82, 2.04

0.264

12–23 vs. <6

1.05

0.67, 1.66

0.831

1.01

0.64, 1.59

0.981

IBF; within the first hour vs. later

1.10

0.68, 1.78

0.705

1.20

0.74, 1.94

0.452

Sex; Female vs. male

1.03

0.71, 1.50

0.861

1.10

0.76, 1.58

0.611

Bottle feeding, yes vs. no

1.78

1.23, 2.57

0.002

1.85

1.29, 2.66

0.001

Affected by the earthquake; yes vs. no

4.12

2.73, 6.22

< 0.001

Housing; good vs. poor

1.58

0.89, 2.84

0.121

Health care; good vs. poor

0.56

0.31, 1.01

0.054

Safety; good vs. poor

1.31

0.70, 2.46

0.405

Nutrition; good vs. poor

0.49

0.27, 0.89

0.019

Mental health support; good vs. poor

0.53

0.33, 0.84

0.007

Constant

0.04

0.000

0.18

0.000