Background
Methods
Data sources
Study population
Definition of sexual inexperience
Statistical methods
Results
Age-standardized prevalence of heterosexual inexperience, 1987–2015
Population characteristics and age-adjusted odds ratios in 2010
Women (N = 16,330) | Men (N = 16,860) | |||||
---|---|---|---|---|---|---|
All | Heterosexual experience | All | Heterosexual experience | |||
No (n = 3256 [19.9%]) | Yes (n = 13,074 [80.1%]) | No (n = 3795 [22.5%]) | Yes (n = 13,065 [77.5%]) | |||
n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
Age | ||||||
18–19 | 1145 (7.0) | 817 (25.1) | 327 (2.5) | 1210 (7.2) | 877 (23.1) | 327 (2.5) |
20–24 | 3034 (18.6) | 1146 (35.2) | 1883 (14.4) | 3143 (18.6) | 1249 (32.9) | 1894 (14.5) |
25–29 | 3457 (21.2) | 661 (20.3) | 2798 (21.4) | 3555 (21.1) | 653 (17.2) | 2900 (22.2) |
30–34 | 3985 (24.4) | 345 (10.6) | 3635 (27.8) | 4105 (24.3) | 524 (13.8) | 3580 (27.4) |
35–39 | 4710 (28.8) | 287 (8.8) | 4419 (33.8) | 4846 (28.7) | 493 (13.0) | 4351 (33.3) |
Marital Status | ||||||
Unmarried | 9071 (55.6) | 3256 (100) | 5818 (44.5) | 10,695 (63.4) | 3795 (100) | 6898 (52.8) |
Married | 7259 (44.4) | 0 (0) | 7256 (55.5) | 6165 (36.6) | 0 (0) | 6167 (47.2) |
Educationa | ||||||
High school or less | 6126 (37.5) | 1031 (31.7) | 5087 (38.9) | 7471 (44.3) | 1645 (43.3) | 5827 (44.6) |
Vocational school or short college | 5930 (36.3) | 978 (30.0) | 4955 (37.9) | 2880 (17.1) | 614 (16.2) | 2268 (17.4) |
Undergraduate studies | 4020 (24.6) | 1194 (36.7) | 2834 (21.7) | 5672 (33.6) | 1386 (36.5) | 4285 (32.8) |
Graduate studies | 254 (1.6) | 53 (1.6) | 198 (1.5) | 837 (5.0) | 151 (4.0) | 686 (5.2) |
Occupational Status | ||||||
Regular employee | 5280 (32.3) | 1065 (32.7) | 4213 (32.2) | 10,401 (61.7) | 1256 (33.1) | 9129 (69.9) |
Part-time or temporary worker | 4625 (28.3) | 778 (23.9) | 3848 (29.4) | 1981 (11.7) | 612 (16.1) | 1367 (10.5) |
Business owner or family business | 559 (3.4) | 51 (1.6) | 501 (3.8) | 1244 (7.4) | 121 (3.2) | 1121 (8.6) |
Unemployed | 4138 (25.3) | 304 (9.3) | 3834 (29.3) | 1119 (6.6) | 535 (14.1) | 588 (4.5) |
Student | 1728 (10.6) | 1058 (32.5) | 677 (5.2) | 2115 (12.5) | 1272 (33.5) | 861 (6.6) |
Annual Income (in JPY 10,000s)b | ||||||
0–99 | 9057 (55.5) | 1920 (59.0) | 7144 (54.6) | 5005 (29.7) | 2333 (61.5) | 2675 (20.5) |
100–299 | 4821 (29.5) | 981 (30.1) | 3841 (29.4) | 4092 (24.3) | 906 (23.9) | 3189 (24.4) |
300–499 | 2101 (12.9) | 321 (9.9) | 1779 (13.6) | 5468 (32.4) | 485 (12.8) | 4986 (38.2) |
500–799c | 351 (2.1) | 34 (1.0) | 310 (2.4) | 1992 (11.8) | 67 (1.8) | 1919 (14.7) |
≥ 800 | – | – | – | 303 (1.8) | 4 (0.1) | 297 (2.3) |
Region of Residenced | ||||||
Kanto | 5455 (33.4) | 1123 (34.5) | 4327 (33.1) | 5617 (33.3) | 1355 (35.7) | 4259 (32.6) |
Chubu | 3277 (20.1) | 632 (19.4) | 2641 (20.2) | 3379 (20.0) | 778 (20.5) | 2600 (19.9) |
Kinki | 2531 (15.5) | 596 (18.3) | 1935 (14.8) | 2486 (14.7) | 607 (16.0) | 1881 (14.4) |
Kyushu/Okinawa | 1891 (11.6) | 316 (9.7) | 1582 (12.1) | 2016 (12.0) | 376 (9.9) | 1646 (12.6) |
Chugoku/Shikoku | 1377 (8.4) | 274 (8.4) | 1098 (8.4) | 1496 (8.9) | 304 (8.0) | 1189 (9.1) |
Tohoku | 1247 (7.6) | 218 (6.7) | 1033 (7.9) | 1328 (7.9) | 300 (7.9) | 1032 (7.9) |
Hokkaido | 553 (3.4) | 101 (3.1) | 458 (3.5) | 539 (3.2) | 80 (2.1) | 457 (3.5) |
Area of residence: population size and density | ||||||
Non-densely inhabited area | 5498 (33.7) | 1146 (35.2) | 4354 (33.3) | 5732 (34.0) | 1309 (34.5) | 4429 (33.9) |
< 200,000 | 3492 (21.4) | 700 (21.5) | 2798 (21.4) | 3725 (22.1) | 827 (21.8) | 2900 (22.2) |
200,000 to < 1,000,000 | 3996 (24.5) | 729 (22.4) | 3269 (25.0) | 4096 (24.3) | 941 (24.8) | 3162 (24.2) |
≥ 1,000,000 | 3344 (20.5) | 681 (20.9) | 2667 (20.4) | 3307 (19.6) | 721 (19.0) | 2587 (19.8) |
Wish to get married in lifetime | ||||||
No | – | 461 (14.2) | – | – | 653 (17.2) | – |
Yes | – | 2795 (85.8) | – | – | 3142 (82.8) | – |
18–24 years | 25–39 years | |||
---|---|---|---|---|
Women | Men | Women | Men | |
aOR (95% CI)a | aOR (95% CI)a | aOR (95% CI)a | aOR (95% CI)a | |
Educationb c | ||||
High school or less | – | – | Ref | Ref |
Vocational school or short college | – | – | 1.10 (0.88 to 1.38) | 0.86 (0.68 to 1.08) |
Undergraduate studies | – | – | 1.60 (1.26 to 2.02) | 0.69 (0.57 to 0.84) |
Graduate studies | – | – | 2.40 (1.39 to 4.14) | 0.77 (0.53 to 1.11) |
p | < 0.001 | 0.001 | ||
Occupational Status | ||||
Regular employee | Ref | Ref | Ref | Ref |
Part-time or temporary worker | 1.19 (0.90 to 1.57) | 1.55 (1.09 to 2.20) | 0.86 (0.69 to 1.07) | 3.82 (3.04 to 4.80) |
Business owner or family business | 0.85 (0.30 to 2.41) | 1.17 (0.52 to 2.63) | 0.61 (0.36 to 1.05) | 0.94 (0.64 to 1.36) |
Unemployed | 0.68 (0.47 to 0.99) | 3.21 (2.07 to 4.99) | 0.36 (0.27 to 0.47) | 7.87 (6.06 to 10.23) |
Student | 1.58 (1.22 to 2.05) | 1.90 (1.49 to 2.42) | 1.19 (0.43 to 3.29) | 4.76 (2.51 to 9.03) |
p | 0.014 | < 0.001 | < 0.001 | < 0.001 |
Annual Income (in JPY 10,000s) | ||||
0–99 | Ref | Ref | Ref | Ref |
100–299 | 0.78 (0.62 to 0.98) | 0.56 (0.44 to 0.72) | 2.19 (1.76 to 2.72) | 0.49 (0.39 to 0.60) |
300–499d | 0.92 (0.57 to 1.50) | 0.35 (0.23 to 0.51) | 1.86 (1.42 to 2.43) | 0.20 (0.16 to 0.25) |
500–799e | – | – | 1.95 (1.05 to 3.59) | 0.09 (0.06 to 0.13) |
≥ 800 | – | – | – | 0.05 (0.01 to 0.19) |
0.114 | < 0.001 | < 0.001 | < 0.001 | |
Region of Residence | ||||
Kanto | Ref | Ref | Ref | Ref |
Chubu | 0.70 (0.54 to 0.91) | 0.91 (0.69 to 1.20) | 1.00 (0.77 to 1.29) | 0.84 (0.67 to 1.07) |
Kinki | 0.90 (0.67 to 1.21) | 0.63 (0.47 to 0.87) | 1.41 (1.08 to 1.83) | 1.15 (0.90 to 1.47) |
Kyushu/Okinawa | 0.68 (0.50 to 0.94) | 0.60 (0.43 to 0.82) | 0.69 (0.49 to 0.98) | 0.61 (0.45 to 0.83) |
Chugoku/Shikoku | 0.99 (0.68 to 1.43) | 0.71 (0.49 to 1.05) | 0.91 (0.64 to 1.29) | 0.75 (0.55 to 1.04) |
Tohoku | 0.68 (0.46 to 0.99) | 0.69 (0.46 to 1.05) | 0.86 (0.58 to 1.27) | 1.00 (0.73 to 1.38) |
Hokkaido | 0.93 (0.56 to 1.55) | 0.63 (0.36 to 1.11) | 0.67 (0.37 to 1.21) | 0.37 (0.19 to 0.71) |
p | 0.209 | 0.001 | 0.091 | 0.011 |
Population Density and Size of Residence | ||||
Non-densely inhabited area | Ref | Ref | Ref | Ref |
< 200,000 | 1.05 (0.81 to 1.35) | 1.04 (0.79 to 1.37) | 0.97 (0.75 to 1.24) | 0.89 (0.71 to 1.11) |
200,000 to < 1,000,000 | 0.77 (0.60 to 1.00) | 0.97 (0.74 to 1.25) | 0.95 (0.75 to 1.20) | 1.03 (0.83 to 1.28) |
≥ 1,000,000 | 0.94 (0.73 to 1.22) | 1.01 (0.77 to 1.33) | 0.81 (0.62 to 1.06) | 0.74 (0.58 to 0.95) |
p | 0.257 | 0.928 | 0.144 | 0.093 |