Table 4 Descriptive statistics, internal construct validity and reliability

Reliability and effectiveness

20.76 (4.34)

1

Condoms are an effective method of birth control

0.71

4.50 (1.16)

0 (0%)

36 (7.2%)

64 (12.8%)

109 (21.8%)

203 (40.6%)

80 (16.0%)

8 (1.6%)

100 (20.0%)

291 (58.2%)

2

The condom is a highly satisfactory form of contraception

0.70

4.44 (1.15)

4 (8%)

34 (6.8%)

61 (12.2%)

124 (24.8%)

197 (39.4%)

78 (15.6%)

2 (0.4%)

99 (19.8%)

277 (55.4%)

3

I think condoms are an excellent means of contraception

0.64

4.45 (1.03)

0 (0%)

23 (4.6%)

60 (12.0%)

157 (31.4%)

193 (38.6%)

63 (12.6%)

4 (0.8%)

83 (16.6%)

260 (52.0%)

4^c

Condoms are unreliable

0.63

3.59 (1.14)

4 (0.8%)

35 (7.0%)

39 (7.8%)

195 (39.0%)

133 (26.6%)

91 (18.2%)

3 (0.6%)

78 (15.6%)

227 (45.4%)

5^c

Condoms do not offer reliable protection

0.55

3.78 (1.06)

3 (0.6%)

41 (8.2%)

48 (9.6%)

204 (40.8%)

158 (31.6%)

45 (9.0%)

1 (0.2%)

92 (18.4%)

204 (40.8%)

Cronbach’s alpha coefficient^a

0.84

Displeasure

6.43 (1.74)

7^c

Condoms ruin the sex act

0.48

3.20 (1.00)

2 (0.4%)

8 (1.6%)

37 (7.4%)

124 (24.8%)

211 (42.2%)

108 (21.6%)

10 (2.0%)

47 (9.4%)

329 (65.8%)

8^c

Condoms are uncomfortable for both partners

0.48

3.23 (1.02)

2 (0.4%)

15 (3.0%)

29 (5.8%)

129 (25.8%)

206 (41.2%)

113 (22.6%)

6 (1.2%)

46 (9.2%)

325 (65.0%)

Cronbach’s alpha coefficient^a

0.65

Excitement

7.94 91.65

9

Condoms are a lot of fun

061

3.96 (0.85)

6 (1.2%)

28 (5.6%)

63 (12.6%)

298 (59.6%)

94 (18.8%)

11 (2.2%)

0 (0%)

97 (19.4%)

105(21.0%)

10^c

The use of a condom is an interruption of foreplay

0.61

3.98 (0.97)

1 (0.2%)

13 (2.6%)

127 (25.4%)

248 (49.6%)

66 (13.2%)

37 (7.4%)

8 (1.6%)

141 (28.2%)

111 (22.2%)

Cronbach’s alpha coefficient^a

0.76

Identity stigma

26.55 (3.57)

11^c

Men who suggest using a condom are really boring

0.58

5.39 (0.94)

29 (5.8%)

232 (46.4%)

171 (34.2%)

48 (9.6%)

12 (2.4%)

8 (1.6%)

0 (0%)

432 (86.4%)

20(4.0%)

12^c

If a couple is about to have sex and the man suggests using a condom, it is less likely that they will have sex

0.67

5.28 (0.95)

22 (4.4%)

213 (42.6%)

181 (36.2%)

60 (12.0%)

17 (3.4%)

7 (1.4%)

0 (0%)

416 (83.2%)

24 (4.8%)

13^c

Women think men who use condoms are jerks

0.61

5.40 (0.90)

32 (6.4%)

227 (45.4%)

164 (32.8%)

64 (12.8%)

12 (2.4%)

0 (0%)

1 (0.2%)

423 (84.6%)

13 (2.6%)

14^c

A woman who suggests using a condom does not trust her partner

0.59

5.21 (1.00)

27 (5.4%)

189 (37.8%)

179 (35.8%)

78 (15.6%)

21 (4.2%)

4 (0.8%)

2 (0.4%)

395 (79.0%)

27 (5.4%)

15^c

People who suggest condom use are a little bit geeky

0.55

5.27 (0.92)

30 (6.0%)

192 (38.4%)

178 (35.6%)

85 (17.0%)

13 (2.6%)

2 (0.4%)

0 (0%)

400 (80.0%)

15 (3.0%)

Cronbach’s alpha coefficient^a

0.81

Embarrassment about negotiation

18.80 (3.10)

16^c

When I suggest using a condom I am almost always embarrassed

0.50

4.59 (1.07)

10 (2.0%)

98 (19.6%)

153 (30.6%)

166 (33.2%)

61 (12.2%)

11 (2.2%)

1 (0.2%)

261 (52.2%)

73 (14.6%)

17^c

It is really hard to bring up the issue of using condoms to my partner

0.60

4.71 (1.01)

12 (2.4%)

104 (20.8%)

168 (33.6%)

166 (33.2%)

43 (8.6%)

7 (1.4%)

0 (0%)

284 (58.6%)

50 (10.0%)

18

It is easy to suggest to my partner that we use a condom

0.53

4.77 (1.05)

0 (0%)

16 (3.2%)

26 (5.2%)

164 (32.8%)

153 (30.6%)

133 (26.6%)

8 (1.6%)

42 (8.4%)

294 (58.8%)

19

I’m comfortable talking about condom with my partner

0.54

4.73 (0.98)

1 (0.2%)

11 (2.2%)

21 (4.2%)

178 (35.6%)

174 (34.8%)

106 (21.2%)

9 (1.8%)

33 (6.6%)

289 (57.8%)

Cronbach’s alpha coefficient^a

0.75

Embarrassment about purchase

18.55 (3.93)

21^c

It is very embarrassing to buy condoms

0.68

3.77 (1.08)

2 (0.4%)

23 (4.6%)

88 (17.6%)

202 (40.4%)

121 (24.2%)

56 (11.2%)

8 (1.6%)

113 (22.6%)

185 (37.0%)

22^c

When I need condoms I often dread having to get them

0.66

3.91 (1.10)

8 (1.6%)

29 (5.8%)

85 (17.0%)

223 (44.6%)

106 (21.2%)

42 (8.4%)

7 (1.4%)

122 (24.4%)

155 (31.0%)

23

I don’t think that buying condoms is awkward

0.38

3.75 (1.05)

1 (0.2%)

61 (12.2%)

123 (24.6%)

228 (45.6%)

51 (10.2%)

34 (6.8%)

2 (0.4%)

185 (37.0%)

87 (17.4%)

24^c

It would be embarrassing to be seen buying condoms in a store

0.56

3.24 (1.13)

1 (0.2%)

17 (3.4%)

32 (6.4%)

173 (34.6%)

119 (23.8%)

143 (28.6%)

15 (3.0%)

50 (10.0%)

277 (55.4%)

25^c

I always feel really uncomfortable when I buy condoms

0.57

3.88 (0.96)

1 (0.2%)

24 (4.8%)

73 (14.6%)

273 (54.6%)

76 (15.2%)

51 (10.2%)

2 (0.4%)

98 (19.6%)

129 (25.8%)

Cronbach’s alpha coefficient^a

0.79