Table 3.
The result of quantile regression for count data for assessing the association between covariates and sexual frequency in migrants
| Variable | Low |
Medium |
High |
|---|---|---|---|
| 10th quantile IRR (95% CI)∗ | 50th quantile IRR (95% CI) | 90th quantile IRR (95% CI) | |
| Age, y | −0.0187† (−0.0216, −0.0158) | −0.0155† (−0.0171, −0.0140) | −0.0157† (−0.0185, −0.0130) |
| Age of sexual debut, y | −0.0116‡ (−0.0198, −0.0034) | −0.0108† (−0.0145, −0.0072) | −0.0163† (−0.0227, −0.0100) |
| Cohabitation, mo | 0.0999† (0.0842, 0.1157) | 0.0426† (0.0358, 0.0495) | 0.0151† (0.0074, 0.0228) |
| Score of SRH knowledge | 0.0064† (0.0051, 0.0077) | 0.0012† (0.0005, 0.0018) | −0.0014‡ (−0.0023, −0.0004) |
| Gender | |||
| Male | 1 | 1 | 1 |
| Female | −0.0972† (−0.1464, −0.0480) | −0.0856† (−0.1096, −0.0617) | −0.1120† (−0.1459, −0.0781) |
| Education attainment | |||
| Primary school graduate | 1 | 1 | 1 |
| Junior middle school graduate | 0.0359 (−0.0461, 0.1179) | 0.0320 (−0.0027, 0.0666) | 0.1037‡ (0.0385, 0.1689) |
| High school graduate | 0.0655 (−0.0222, 0.1533) | 0.0533‡ (0.0151, 0.0916) | 0.0693§ (0.0004, 0.1383) |
| 3-y College education | 0.0075 (−0.0981, 0.1130) | 0.0197 (−0.0268, 0.0662) | 0.0693 (−0.0090, 0.1475) |
| Bachelor’s degree or above | −0.0059 (−0.1304, 0.1186) | 0.0776‡ (0.0217, 0.1335) | 0.0809 (-0.0058, 0.1676) |
| Occupation | |||
| Unemployed | 1 | 1 | 1 |
| Worker | 0.0223 (−0.0904, 0.1350) | 0.0411 (−0.0036, 0.0858) | 0.0571 (−0.0126, 0.1269) |
| Administrator | 0.0341 (−0.1017, 0.1699) | 0.0294 (−0.0210, 0.0799) | 0.0442 (−0.0350, 0.1234) |
| Service trade | 0.0795 (−0.0243, 0.1833) | 0.0377 (−0.0015, 0.0769) | −0.0217 (−0.0875, 0.0442) |
| Professionals | 0.0964 (−0.0234, 0.2163) | 0.0260 (−0.0245, 0.0765) | 0.0253 (−0.0507, 0.1013) |
| Self-employment | 0.0390 (−0.0709, 0.1489) | 0.0242 (−0.0182, 0.0665) | −0.0176 (−0.0913, 0.0561) |
| Others | −0.0286 (−0.2162, 0.1590) | 0.0287 (−0.0433, 0.1008) | 0.0626 (−0.0453, 0.1704) |
| Personal monthly incomes | |||
| Less than ￥1,000 | 1 | 1 | 1 |
| ￥1,000–2,999 | 0.0025 (−0.1079, 0.1129) | −0.0684† (−0.1084, −0.0285) | −0.0589 (−0.1279, 0.0100) |
| ￥3,000–4,999 | 0.0258 (−0.0865, 0.1380) | −0.0504§ (−0.0899, −0.0109) | −0.0375 (−0.1049, 0.0300) |
| ￥5,000–6,999 | 0.0653 (−0.0643, 0.1949) | −0.0162 (−0.0640, 0.0316) | −0.0042 (−0.0832, 0.0747) |
| More than ￥7,000 | 0.0945 (−0.0480, 0.2370) | 0.1528† (0.0811, 0.2245) | 0.0857§ (0.0058, 0.1655) |
| Hukou, household registration | |||
| Agriculture account | 1 | 1 | 1 |
| Non-agriculture account | −0.0098 (−0.0587, 0.0391) | −0.0056 (−0.0305, 0.0194) | 0.0181 (−0.0185, 0.0548) |
| Sexual communication | |||
| Sometimes | 1 | 1 | 1 |
| Seldom | 0.1852† (0.1242, 0.2462) | 0.0944† (0.0657, 0.1231) | −0.0988† (−0.1559, −0.0417) |
| Frequently | 0.4534† (0.3870, 0.5198) | 0.3050† (0.2670, 0.3430) | 0.1272† (0.0663, 0.1882) |
| Sexual relationship | |||
| Married | 1 | 1 | 1 |
| Unmarried | −0.0188 (−0.1482, 0.1105) | 0.0482 (−0.0044, 0.1007) | −0.0195 (−0.0884, 0.0495) |
| Casual sex | −0.1146 (−0.4034, 0.1743) | −0.0583 (−0.2182, 0.1015) | 0.0440 (−0.3450, 0.4330) |
| Sexual repression | |||
| Yes | −0.1062§ (−0.1913, −0.0210) | −0.0554† (−0.0874, −0.0234) | −0.0349 (−0.0892, 0.0195) |
| No | 1 | 1 | 1 |
| Masturbation | |||
| Yes | 0.2168† (0.1384, 0.2953) | 0.1339† (0.0954, 0.1724) | 0.0903‡ (0.0310, 0.1495) |
| No | 1 | 1 | 1 |
| Migrants’ provinces of origin | |||
| Sichuan | −0.0411 (−0.0487, 0.1401) | −0.0108 (−0.0537, 0.0320) | −0.0287 (−0.0864, 0.0289) |
| Anhui | −0.0411 (−0.1244, 0.0423) | −0.0160 (−0.0497, 0.0178) | −0.0202 (−0.0653, 0.0249) |
| Jiangsu | −0.0885§ (−0.1729, −0.004) | −0.0548‡ (−0.0947, −0.0150) | −0.0276 (−0.0837, 0.0285) |
| Zhejiang | −0.0149 (−0.1135, 0.0837) | −0.0367 (−0.0776, 0.0042) | −0.0740‡ (−0.1259, −0.0222) |
| Chongqing | −0.0027 (−0.1522, 0.1467) | 0.0259 (−0.0288, 0.0806) | 0.0133 (−0.0747, 0.1014) |
| Henan | 0.0585 (−0.0276, 0.1447) | 0.0291 (−0.0134, 0.0717) | 0.0360 (−0.0305, 0.1024) |
| Other provinces | 1 | 1 | 1 |
| Investigated area | |||
| Beijing | 1 | 1 | 1 |
| Shanghai | 0.1592† (0.0872, 0.2313) | 0.0467‡ (0.0137, 0.0798) | −0.0920† (−0.1447, −0.0392) |
| Hangzhou | 0.1539† (0.0729, 0.2348) | 0.1158† (0.0755, 0.1561) | −0.0315 (−0.0858, 0.0227) |
| Chengdu | 0.3594† (0.2588, 0.4599) | 0.1334† (0.0837, 0.1832) | 0.0876‡ (0.0183, 0.1568) |
| Chongqing | 0.0942 (−0.0405, 0.2289) | 0.1248† (0.0708, 0.1788) | 0.0937‡ (0.0123, 0.1751) |
SRH = sexual and reproductive health.
∗
The frequency of sexual intercourse at 10%, 50%, and 90% quantile levels were 2, 4, and 10 times, respectively.
†
P < .001.
‡
P < .01.
§
P < .05.