Table 2

Descriptive data from a convenience sample, according to women's age-group.

Characteristics
25–35 years (n = 73)
36–49 years (n = 74)
over 49 years (n = 50)

Age-Mean (SEM)
29.8 (0.4)
42.4 (0.5)
64.5 (1.5)
Educational level (%)
None
3 (4.1)
15 (20.3)
14 (28.0)
Primary
23 (31.5)
27 (36.5)
25 (50.0)
Secondary
17 (23.3)
9 (12.1)
4 (8.0)
Higher
30 (41.1)
23 (31.1)
7 (14.0)
Household income (%)
Above the poverty line
28 (38.4)
28 (37.8)
13 (26.0)
Below the poverty line
45 (61.6)
46 (62.2)
37 (74.0)
Fecundity (%)
Children per woman-Mean (SEM)
2.4 (0.2)
2.7 (0.1)
6.0 (0.5)
Nulliparity
16 (21.9)
5 (6.8)
5 (10.0)
Parity
57 (78.1)
69 (93.2)
45 (90.0)
Family history of osteoporosis (%)
Yes
40 (54.8)
33 (44.6)
32 (64.0)
No
33 (45.2)
41 (55.4)
18 (36.0)
Menopause among women (Irrespective of age group).
Mean age (years)
42.3 ± 0.8


Median age (years)
44.0


Range of age (years)
27.0 – 53.0


Menopause before age 45 years (%)
25–35 years (n = 73)
36–49 years (n = 74)
Over 49 years (n = 50)
Yes
4 (5.5)
18 (24.3)
18 (36.0)
No
69 (94.5)
56 (75.7)
30 (64.0)
Use of aluminum antiacids (%)
Users
16 (21.9)
17 (23.0)
13 (26.0)
Non-users
57 (78.1)
57 (77.0)
37 (74.0)
Lactose intolerance (%)
Yes
15 (20.5)
14 (18.9)
9 (18.0)
No
58 (79.5)
60 (81.1)
41 (82.0)
Coffee consumption (%)
Yes
51 (69.9)
62 (83.8)
39 (78.0)
No
22 (30.1)
12 (16.2)
11 (22.0)
Cups a day-Mean (SEM)
1.8 (0.1)
2.1 (0.1)
1.9 (0.1)

Fecundity rate is only based on data of parity per each age group.

Consumption rate is only based on coffee-consumer data per each age group.

Hernandez-Rauda and Martinez-Garcia BMC Musculoskeletal Disorders 2004 5:29   doi:10.1186/1471-2474-5-29