Risk Factors for Chronic Mastitis in Morocco and Egypt

Table 2

Reproductive characteristics of 197 women who participated in a case-control study of chronic mastitis, Morocco and Egypt, 2011.

Characteristics	Case		Control		𝑃^a
	𝑁	%	𝑁	%
Total^(85,112)	85	100	112	100
Currently pregnant^(56,76)					0.722^b
Yes	4	7.14	4	5.26
No	52	92.86	72	94.74
Parity^(81,98)					<.0001^b*
0	1	1.23	28	28.57
1-2	26	32.10	24	24.49
3-4	36	44.44	34	34.69
≥5	18	22.22	12	12.24
If parous, age at first birth^(51,51)					0.0219^b*
≤18	5	9.80	13	25.49
19–24	33	64.71	18	35.29
25–30	10	19.61	16	31.37
≥31	3	5.88	4	7.84
If parous, age at last birth^(51,51)					0.602^b
≤18	0	0	2	3.92
19–24	7	13.73	9	17.65
25–30	22	43.14	19	37.25
≥31	22	43.14	21	41.18
Previous miscarriage^(52,66)					0.734
Yes	6	11.54	9	13.64
No	46	88.46	57	86.36
Ever infertile^(63,77)					0.959
Yes	8	12.70	10	12.99
No	55	87.30	67	87.01
History of contraception^(79,97)					0.0053
Yes	54	68.35	46	47.42
No	25	31.65	51	52.58
Type of contraception^(41,37)					0.528^b
Pill	18	43.90	18	48.65
Shot	4	9.76	5	13.51
Patch	2	4.88	4	10.81
Implant (IUD)	17	41.46	10	27.03
Age started contraception^(35,30)					0.857^b
≤19	4	11.43	6	20.00
20–24	13	37.14	10	33.33
25–29	10	28.57	8	26.67
≥30	8	22.86	6	20.00
Current menstrual cycle^(70,91)					0.542
Yes	53	75.71	65	71.43
No	17	24.29	26	28.57
Regular menstrual cycle^(65,91)					0.748
Yes	53	81.54	76	83.52
No	12	18.46	15	16.48
Menopausal status^(80,102)					0.727
Pre-	61	76.25	80	78.43
Post-	19	23.75	22	21.57
Age at menopause^(15,19)					0.580^b
≤45	4	26.67	2	10.53
46–50	4	26.67	6	31.58
>50	7	46.67	11	57.89

^a𝑃 value from Chi-square test.
^b𝑃 value from Fisher’s exact test.
*Significant at 𝛼≤0.05.