Table 3.
Interview quality at waves I and IV according to virginity status, from National Longitudinal Study of Adolescent Health. Values are numbers (percentages) unless stated otherwise
| Variables | Virgins | Non-virgins | |||
|---|---|---|---|---|---|
| No pregnancy | Pregnancy | No pregnancy | Pregnancy | ||
| Women | 146 (2.5) | 45 (0.5) | 2319 (30.7) | 5116 (63.8) | |
| Mean No of interruptions during interview, wave I** | 0.7 | 1.0 | 0.9 | 1.1 | |
| Mean number of interruptions during interview, wave IV*** | 1.2 | 1.8 | 1.2 | 1.6 | |
| Respondent appeared bored, wave I: | |||||
| No | 135 (92.5) | 39 (89.3) | 2132 (90.5) | 4676 (90.7) | |
| Yes | 11 (7.5) | 6 (10.7) | 183 (9.3) | 436 (9.3) | |
| Don’t know/refused/missing | 0 (0) | 0 (0) | 4 (0.1) | 4 (0.1) | |
| Respondent appeared bored, wave IV*: | |||||
| No | 139 (94.3) | 40 (94.2) | 2232 (96.8) | 4859 (94.8) | |
| Yes | 6 (5.7) | 5 (5.8) | 83 (3.1) | 252 (5.1) | |
| Don’t know/refused/missing | 1 (<0.1) | 0 (0) | 4 (<0.1) | 5 (0.1) | |
| Respondent needed help with questionnaire, wave IV***: | |||||
| No help | 124 (68.3) | 33 (76.2) | 2201 (93.6) | 4477 (86.9) | |
| Help with questions | 21 (31.7) | 12 (23.8) | 114 (6.3) | 634 (13.0) | |
| Missing | 1 (<0.1) | 0 (0) | 4 (<0.1) | 5 (0.1) | |
Percentages calculated using survey weights to allow population representative inference.
*P<0.05.
**P<0.01.
***P<0.001 using ANOVA for continuous variables and Fisher’s exact test for categorical variables.