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. 2017 Jan-Feb;92(1):35–40. doi: 10.1590/abd1806-4841.20175241

Table 1.

Prevalence of AGA in men according to age groups

Age
Grade
17-29
n (%)
(n=146)
30-39
n (%)
(n=97)
40-49
n (%)
(n=57)
50-59
n (%)
(n=60)
60-69
n (%)
(n=42)
≥70
n (%)
(n=17)
Non-AGA 83 (56.8%) 28 (28.9%) 13 (22.8%) 10 (16.7%) 3 (7.1%) 1 (5.8%)
Type 1 7 (4.8%) 4 (4.1%) 3 (5.3%) 1 (1.7%) 0 0
Type 2 18 (12.3%) 7 (7.2%) 3 (5.3%) 3 (5%) 1 (2.4%) 1 (5.9%)
Type 2a 2 (1,4%) 1 (1%) 0 0 0 0
Type 3 9 (6.2%) 5 (5.2%) 1 (1.8%) 2 (3.3%) 0 1 (5.9%)
Type 3a 1 (0.7%) 0 0 0 0 1 (5.9%)
Type 3v 18 (12.3%) 28 (28.9%) 18 (31.6%) 18 (30%) 17 (40.5%) 2 (11.8%)
Type 4 1 (0.7%) 0 2 (3.5%) 2 (3.3%) 2 (4.8%) 0
Type 4a 0 2 (2.1%) 0 0 1 (2.4%) 0
Type 5 1 (0.7%) 1 (1%) 0 1 (1.7%) 1 (2.4%) 0
Type 5a 0 3 (3.1%) 5 (8.8%) 2 (3.3%) 0 0
Type 6 0 9 (9.3%) 4 (7%) 4 (6.7%) 2 (4.8%) 2 (11.8%)
Type 7 0 8 (8.2%) 6 (10.5%) 15 (25%) 15 (35.7%) 8 (47.1%)
Female pattern 6 (4.1%) 1 (1%) 2 (3.5%) 2 (3.3%) 0 1 (54.9%)