Sun-Tanning Perceptions of a New Zealand Urban Population (1994–2005/6)

Table 4

Unadjusted and adjusted* effects with 95% confidence intervals for total Protan scores.

	Unadjusted			Adjusted (𝑛 = 5,392)
		𝑃=0.004			𝑃=0.142
Year (summer)
1994	0.00			0.00
1997	−0.04	−0.54, 0.45		0.08	−0.40, 0.56
1999/2000	−0.13	−0.63, 0.37		0.59	0.10, 1.07
2002/2003	−0.49	−0.99, 0.00		0.28	−0.21, 0.76
2005/2006	−0.80	−1.29, −0.31		0.19	−0.29, 0.68
		𝑃=0.005			𝑃=0.006
City (N to S)
Auckland	0.00			0.00
Hamilton	−0.30	−0.79, 0.19		−0.36	−0.84, 0.11
Wellington	−0.40	−0.89, 0.09		−0.47	−0.94, 0.01
Christchurch	−0.94	−1.43, −0.45		−0.89	−1.36, −0.42
Dunedin	−0.37	−0.87, 0.12		−0.29	−0.77, 0.19
		𝑃<0.001			𝑃<0.001
Sex
Male	0.00			0.00
Female	−0.77	−1.08, −0.46		−0.56	−0.86, −0.26
		𝑃<0.001			𝑃<0.001
Age group (years)
15–19	0.00			0.00
20–29	−1.70	−2.23, −1.17		−1.64	−2.16, −1.11
30–39	−3.38	−3.90, −2.86		−3.34	−3.86, −2.82
40–49	−3.72	−4.27, −3.17		−3.69	−4.24, −3.13
50–59	−4.30	−4.86, −3.73		−4.22	−4.80, −3.65
60–69	−5.52	−6.17, −4.87		−5.49	−6.16, −4.83
		𝑃<0.001			𝑃<0.001
Skin type
(most sun sensitive) I	0.00			0.00
II	1.83	1.46, 2.20		1.63	1.27, 1.99
III	2.12	1.64, 2.60		1.88	1.40, 2.36
(least sun sensitive) IV	−0.73	−2.21, 0.75		−0.48	−1.93, 0.97
		𝑃=0.016			𝑃<0.001
Ethnicity
NZ European	0.00			0.00
Maori	0.67	0.04, 1.30		−0.48	−1.09, 0.14
Pacific	0.62	−0.48, 1.73		−1.19	−2.26, −0.11
Asian	−0.97	−1.82, −0.12		−2.17	−3.02, −1.32
Other	−0.92	−2.60, 0.79		−1.74	−3.35, −0.13

∗Adjusted for all other variables in the table.